Tag: science

In Our Time: Photosynthesis

In the end nearly all life on Earth depends on sunlight for its energy source. Heterotrophs like ourselves are a step or two away from the sunlight, but ultimately it’s the process of photosynthesis that fuels our food and thus ourselves. Photosynthesis also, as a byproduct, provides the air we breathe. The three experts who talked about it on In Our Time were Nick Lane (University College London), Sandra Knapp (Natural History Museum) and John Allen (Queen Mary, University of London).

Photosynthesis happens in plants, in structures called chloroplasts inside plant cells. At the botanical level Knapp explained that photosynthesis is the plant taking in CO2 and water, and turning those into oxygen and sugars using the energy from sunlight. After she had set the scene the two biochemists moved on to talk a bit about the molecules involved in making this process work. Lane explained the complexity of the protein complexes that are needed, in terms of their size. On the one had they’re very small – each chloroplast is less than a tenth of a millimetre across, yet they are packed full of thousands of clusters of photosynthetic apparatus. But from another perspective they’re very big – if you were to be shrunk to the size of an oxygen atom then the photosynthetic complexes would look like vast industrial cities.

Chlorophyll is a critical component of the process, it does the actual light harvesting. Allen gave quite a good verbal description of a chlorophyll molecule – first imagine a line of four carbon atoms with a nitrogen at the end, and then imagine this formed into a ring (a pentagon). Then imagine four of those in a line, then form them into a ring with the nitrogens all in the centre. This is the head of the chlorophyll molecule, and in the centre spot sits a magnesium atom which is essential to the process. One of the four rings has a tail which is insoluble in water but soluble in fats, and so it is what anchors the chlorophyll in the chloroplast membrane (which is made up of fats).

There are actually 300 or so chlorophyll molecules involved in each photosynthetic operation. The light is absorbed by one and then an electron is excited and leaves the chlorophyll molecule. This bumps into another and detaches an electron from it, and it bumps around a bit like a ball in a pinball table. Eventually it reaches one special chlorophyll molecules which uses the energy to “crack” a water atom. They didn’t really explain the details of the process (and I have long since forgotten them from the days when I had it memorised!), but from here you either follow a process that ends up with glucose (stored energy) and oxygen (toxic waste) or you use the protons from the water (protons are hydrogen nuclei, so that’s what you get if you break up the water and strip the electron off the hydrogen atom) to generate ATP (the energy currency of all cells).

One of the biochemists (Lane, I think) said that ATP is a bit like the coins you put in a coin operated machine. Any time a cell needs energy to do something it uses ATP to power the process. ATP is made either during photosynthesis, or by a process called respiration that both plants and animals do. In essence both do the same thing, but photosynthesis starts with light and respiration starts with glucose. Both processes build up a proton gradient across a membrane – on one side of the membrane there are lots of protons (generated from the H2O or glucose), on one side there are very few. Movement of these protons through the membrane only occurs in channels created by protein complexes that use the energy of this potential difference to generate ATP.

So that’s, in basic terms, the process. They also talked a bit about why plants are green – which is one of those “that’s a good question, but we’re not sure” moments. In one sense (which Knapp pointed out) chlorophyll is green because that’s the wavelength of light it reflects. But more interesting is why plants aren’t black – surely it would be most efficient to absorb all the light? There is some idea that higher wavelengths of light might damage the plants, so are reflected, but it’s not that simple because they don’t just absorb red light (which would be safest). In this bit of the discussion they also mentioned the nifty reason why rainforest plants tend to have red undersides to their leaves. Not much light makes it down to the leaves of plants that aren’t up in the canopy, so it’s important to get as much as you can out of the light you do get. So the red underside reflects red light back up to the top surface of the leaf for another chance of using the energy from it.

Another subject covered was the evolution of photosynthesis, and how plants acquired the ability. And what effect this had on the planet. Photosynthesis evolved in cyanobacteria, which are single celled organisms. Chloroplasts are actually descendants of these free living organisms, which were absorbed or engulfed by ancestral plant cells. So plants didn’t evolve the ability to photosynthesise themselves, instead they make use of a cell that already had the ability. The evolution of photosynthesis had a huge effect on the planet – using up the CO2 in the atmosphere had a cooling effect, and actually led to an ice age, a snowball earth. Release of O2 was also not good – it is very reactive, and was actually toxic to most organisms at the time. Bragg was fascinated by the idea that something that’s so essential to most life nowadays was once a toxic waste product.

This was a bit of an odd subject for me to write up – I think I’ve mostly covered what they talked about, but I’m very aware that I used to know a lot more about it. I can remember having the photosynthetic pathway memorised (along with the various steps in respiration too), I just can’t remember any of it! So I know the above is simplified, but I no longer know what the details should be. A bit of a weird sensation.

Heart vs Mind: What Makes Us Human?; The First World War; How to Get Ahead; Precision: The Measure of All Things

We finished three different series over the last week so I wasn’t going to write about any of the one-off programmes as well, but Heart vs Mind: What Makes Us Human? irritated me sufficiently that I wanted to say why! The premise of this film was that the presenter, David Malone, had always thought of himself as a wholly rational person but then his life had become derailed – his wife had started to suffer from severe depression and it was as if the person she had been no longer existed. In the wake of that, and his responses to it, he started to think emotions were more important to what makes us human than he’d previously thought. So far, so good – I mean I might quibble about how it’s a known thing that no-one’s really totally rational and we know that the mind affects the body & vice versa; and I might wonder what his wife thinks about being talked about as if she might as well be dead. But those are not why I found this programme irritating.

I found it irritating because the argument he was putting forward had the coherency and strength of wet tissue paper. He took the metaphorical language of “brain == reason; heart == emotion” and then looked for evidence that the physical heart is the actual source of emotions. There was some rather nice science shown in the programme – but whenever a scientist explained what was going on Malone would jump in afterwards and twist what was said into “support” for his idea.

For instance, take heartbeat regulation. It is known that there are two nerves that run from the brain down to the heart and they regulate the speed of the heartbeat. There is a physiologist in Oxford (I didn’t catch his name) who is looking at how that regulation works. It turns out there is a cluster of neurones attached to the heart which do the actual routine “make the heart beat” management. The messages coming from the brain tell the heart neurone cluster “speed up” or “slow down” rather than tell the heart muscle to “beat now; and now; and now”. Interesting, but not that astonishing – I think there are other examples of bits of routine tasks being outsourced to neurones closer to the action than the brain is (like the gut, if I remember correctly). Malone took this as proof that the heart had its own mini-brain so it would be possible for it to generate emotions. And so it’s “like a marriage between heart and brain with the brain asking the heart to beat rather than enslaving it and forcing it to beat.”

There were other examples of his failure to separate metaphor from reality – indeed his failure to realise that there were two things there to separate. Take, for instance, the metaphor of the heart as a pump. Malone hated this metaphor, so industrial and mechanical and soulless. Practically the root of everything wrong with modern society! (I exaggerate a tad, but not much.) However, the heart undeniably does pump blood round the body. So he looked at visualisations of blood flowing through his heart (another awesome bit of science) and talked about how beautiful this was – as the blood is pumped around the shape of the heart chambers encourages vortices to form in the flow which swirl in the right way to shut the valves after themselves on the way out. Which is, indeed, beautiful and rather neat – and I learnt something new there. However Malone then carried on about how we shouldn’t keep saying the heart is a pump because the complexity of the heart’s pumping mechanics are too beautiful to be reduced to what the word pump makes him imagine. Er, what? Saying you can only imagine pumps as simple metal cylinders with pistons says more about paucity of your imagination than the pumpness of the heart.

I think part of my problem with this was that I’m not actually that much in disagreement with him so it was irritating to watch such a poor argument for something reasonable. I too believe Descartes was wrong – you can’t separate mind from body. The mind is an emergent property of the body. And there is feedback – our mental state, our emotions and beliefs, affect the body and its functions. Our physical health and physical state affects our minds. It’s not surprising to me that it’s possible to die of a broken heart (ie mental anguish can affect the physical system including disrupting heartbeat potentially fatally in someone whose heart is already weak). But this is not because the metaphor of the heart as the seat of emotions is a physical reality. It’s because mind and body are one single system.

None of us are rational creatures. Emotions are a central part of what makes us human. And metaphors do not need to be based in a physical truth to be both useful and true.

(I also get grumpy about people who think that explaining something necessarily robs it of beauty but that’s a whole other argument. As is the one where I complain about the common equation of industry with ugliness.)

Moving on to what I intended to talk about this week: we’ve just finished watching the BBC’s recent 10 part series about The First World War. This was based on a book by Hew Strachan, and used a combination of modern footage of the key places, contemporary film footage, photographs and letters to tell the story of the whole war from beginning to end. Although obviously the letters were chosen to reflect the points the author wanted to make, using so many quotes from people who were there helped to make the series feel grounded in reality. It was very sobering to watch, and the sort of programmes where we frequently paused it to talk about what we’d just seen or heard. It wasn’t a linear narrative – the first couple of episodes were the start of the war, and the last couple were the end, but in between the various strands were organised geographically or thematically. An episode on the Middle East for instance, or on the naval war, or on the brewing civil unrest in a variety of the participating countries.

I shan’t remotely attempt a recap of a 10 episode series, instead I’ll try and put down a few of the things that struck me while watching it. The first of those was that there is so much I didn’t know about the First World War. This wasn’t a surprise, to be honest, I’ve not really read or watched much about it and didn’t spend much time on it at school (having given up history pre-GCSE). But I’d picked up a sort of narrative by osmosis – the Great War is when Our Men went Over There and Died in a Brutal Waste of Life. And that’s true as far as it goes, but it doesn’t go anywhere near far enough. Even for the Western Front – the British narrative is all about it being “over there” but (obviously!) for the French and the Belgians this was happening in their country and in their homes. One of the sources used for this part of the war was a diary of a French boy – 10 years old at the start, 14 by the end – which really brought that home. And (again obviously) the Western Front and the French+British and German troops weren’t the only participants nor the only areas of conflict. I thought separating it out geographically & thematically was well done to help make that point.

It was odd to note how much the world has changed in the last century. Because there was film footage of these people – dressed a bit too formally, but looking like ordinary people – the casual anti-Semitism and racism in their letters and official communications was more startling than it would’ve been from more distant seeming people. Things like referring to Chinese or African troops as “monkeys” in relatively official documents. I’m not saying that racism or anti-Semitism have vanished in the modern world, but there’s been a definite change in what’s acceptable from politicians and so on.

Throughout the whole series the shadow of the Second World War loomed. Obviously no-one knew at the time how things would turn out (tho it seems one of the French generals did make some rather prescient remarks about only getting 20 years of peace at the end of the First World War). But it’s rather hard to look at it now without the knowledge that hindsight gives us. Which ties in with my remark about anti-Semitism above, because one of the things that changed cultural ideas of “what you can say about Jews” is the Holocaust. And other hindsight spectres included the situation in the modern Middle East as set up in large part by the First World War, and of course the Balkans too.

Interesting, thought provoking, and I’m glad I watched it.

Very brief notes about the other two series we finished:

How to Get Ahead was Stephen Smith examining three different historical courts and looking at both the foibles of the monarch and the ways a courtier at that court would need to behave & dress in order to succeed. He picked out a selection of very despotic rulers – Richard II of England, Cosimo Medici of Florence and Louis XIV “the Sun King” of France. I wasn’t entirely convinced about Smith as a presenter, a few more jokes in his script than he quite managed to pull off, I think. But good snapshots of the lives of the elite in these three eras/areas.

Precision: The Measure of All Things was Marcus du Sautoy looking at the various ways we measure the world around us. For each sort of measurement (like length, or time) he looked at how it had evolved throughout history, and at how greater precision drives on technology which in turn can generate a need for even greater precision. I think I found this more interesting than J, because I think it’s kinda neat to know why seemingly arbitrary units were decided on when they could’ve picked anything. I mean the actual definition settled on for a meter is arbitrary (the distance light travels in a vacuum in 1/299,792,458 of a second) but there’s a rationale for why we decided on that particular arbitrary thing (the definition before the definition before the current one was that it was 1/10,000,000th of the distance from the north pole to the equator).

Other TV watched this week:

Episode 2 of Churches: How to Read Them – series looking at symbolism and so on in British churches.

Krakatoa Revealed – somewhat chilling documentary about the 19th Century eruption of Krakatoa and what we’re learning about the certainty of future eruptions of Krakatoa.

24 Hours on Earth – nature documentary looking at the effects of the diurnal cycle on animals and plants. Lots of neat footage and a voiceover with somewhat clunky and distracting metaphors (“Soon the sun’s rays will flip the switch and it will be light” !?)

Episode 1 of David Attenborough’s First Life – series about the origins of life and the evolution of animals.

Monkey Planet; Pagans and Pilgrims: Britain’s Holiest Places

Monkey Planet was a three part series presented by George McGavin about primates – monkeys, apes and lemurs. The first episode in was primarily a survey of just how wide-ranging and varied a group the primates are. The other two looked at aspects of primate behaviour that we tend to think of as particularly human, and showed both how it’s actually primate-wide and more varied than our narrow perspective suggests. The second episode concentrated on social interactions – like social hierarchies, family arrangements, maintaining friendships. And the third episode was focussed on intelligence and learning. That had the most startling piece of footage – a chimpanzee who lives in Iowa in a research institute who was shown going on a picnic with one of the scientists and making a campfire and toasting marshmallows on it. It shouldn’t be startling – I know chimpanzees are intelligent and very closely related to humans (we could be considered a third chimpanzee species). But somehow making a fire to toast marshmallows on was more human-ish than I was expecting.

This was a fun series to watch, even if I haven’t written much – its strength was in the footage of all the different primates being primates (which is hard to write about but good to watch).

Another series we finished watching this week was Pagans and Pilgrims: Britain’s Holiest Places. This covered a lot of the same sort of territory as the recent Neil Oliver series, Sacred Wonders of Britain (post) but where the Oliver series organised things chronologically this one organised them thematically. The six half-hour episodes covered things like “Water” or “Caves” and so on. It was based on someone’s book, but not presented by the author. I’m not sure I was all that keen on the actual presenter – Ifor ap Glyn – whose schtick seemed to be that at the start of the episode he tried to come across as completely without knowledge on the subject, then by the end of the half hour he’d “learnt why these places are so important”. And it wasn’t quite believable either at the start or the end. One thing he was very good at, however, was telling the associated stories for places with the right sense of awareness of the ridiculous nature of them!

A bit shallow, but actually did rather well as a contrasting sort of programme to watch after something more weighty (like The First World War).

Other TV watched this week:

Episode 8 of The First World War – a 10 part series covering the whole of the war.

Episodes 1 and 2 of Ian Hislop’s Olden Days – a series about the British fascination with an idealised past.

Episode 1 of How to Get Ahead – series about court life during a three different historical periods.

Episode 1 of Precision: The Measure of All Things – series about measurement and the history of measurement.

In Our Time: The Invention of Radio

Sunday morning we listened to the In Our Time episode about the invention of radio, which we’ve had sitting on the ipod for a while – it’s not a subject that caught either of our imaginations in advance. It did turn out to be interesting, but it also felt like a series of vignettes – this person, this date, this advance, now move on to the next – so I’m approaching writing it up with some trepidation! The three experts on the programme were Simon Schaffer (University of Cambridge), Elizabeth Bruton (University of Leeds) and John Liffen (Science Museum, London).

At the beginning of the show Bragg introduced the subject by talking about Marconi and the patents he filed in the early 20th Century that mean he is often credited as the father of radio. When they discussed him, towards the end of the programme, they talked about how he liked to present himself as coming up with the whole thing himself. He didn’t give many (if any) of the people who’d previously worked in the field credit for their achievements. But as the programme had just demonstrated, radio wasn’t invented in a single flash of genius but was instead the result of an accumulation of nearly a century of small advances.

Before the 19th Century if you wanted to send a complex message a long way, then it could only travel as fast as you could transport a person carrying it. Experiments with electromagnetism in the early 19th Century started to change this, and by the 1830s a system of transmitting messages along a wire had been developed – the telegraph. At first the pioneers of this technology had envisioned something that would twist a needle to point at the required letter of the alphabet, but the work of Morse & others established a technically easier method involving a simple code. The telegraph took off pretty rapidly, but developing a wireless method would take much longer.

James Clerk Maxwell came up with a theory of electromagnetism that predicted electromagnetic waves. At first this was purely in the realm of theory, and proving it experimentally posed a variety of technical problems. You have to design and build apparatus to emit these waves, which was eventually done in the form of a spark-gap transmitter – I don’t think they explained how this worked on the programme. And then having done this you need to reliably detect the resulting waves. They talked about a few of the ways that were developed, but I didn’t really follow any of them and so have forgotten the details :/ Over a period of several years successive scientists and engineers made their own contributions to the field, but the definitive experimental proof came from the work of Hertz in the late 1880s.

This is still science rather than technology – none of the people involved so far in the story were thinking in terms of commercial applications, it was just an interesting phenomenon to investigate and try to explain. The Post Office, in Britain, oversaw the domestic telegraph network and was beginning to be interested in possible applications of wireless technology. However there was some pushback because the telegraph system worked so well, so why develop something new? There was a similar thought process at work in the early days of the telephone system too – the postal system worked so well, why would anyone need a phone?

Even once it was known to be theoretically possible to transmit and receive electromagnetic waves wirelessly there were still several practical obstacles that needed to be overcome. For instance at first transmitters transmitted across a wide range of frequencies – so if there were two transmitters relatively close together then their signals would overlap and a receiver wouldn’t be able to pick out the message from one or the other. So one of the advances that had to be made was in the concept of tuning – restricting the transmitter to a particular subset of frequencies and then only listening to one of these bands. Another obstacle to be overcome was in the sensitivity of detectors. This was done in part by a man called Bose, who was working in Calcutta. The detectors used didn’t operate as well in the humid environment of India, and so Bose had to develop a modification of the design – which was then better in other environments too.

And we’re back to where Marconi enters the story. He was a young man from a wealthy Italian family, and despite his protestations otherwise what he did was to put together all the various prior work on wireless technology and figure out a commercial product. He’s helped in this by the fact that he’s rich, well connected and good at publicity. He also came up with a niche for the technology – ships! Obviously it’s not practical to trail a telegraph wire after a ship that’s sailing across the Atlantic, so this is an application where wireless has obvious answers to the “why bother?” question. Most people at that time (including people like Tesla) thought that electromagnetic waves would move in straight lines, so this is a case where Marconi not really understanding the science worked out in his favour – he just set up trials at doing a transatlantic transmission from Cornwall to the US. This was a success and he was then able to market his devices for use in shipping.

These radios were still transmitting code rather than sound. The programme didn’t spend much time covering the next stage because it was getting towards the end of the time they had available. But basically instead of transmitting bursts of waves, instead this built on the work of Tesla (I think) and transmitted a continuous radio signal. The modulations of this signal were then used to carry information that could be decoded into the original soundwaves recorded by the microphone.

I’m not sure I’ve done the programme justice with this write-up – in particular there were a lot of little biographical snippets for the various figures involved in the story that made them come alive as people, and I haven’t conveyed that at all.

Unnatural Histories; Tales from the Royal Bedchamber

Unnatural Histories was a series with a message, and in the case of one of the episodes it even seemed to have some subliminal messaging going on (and perhaps the other two and we just didn’t spot it). The basic premise was that the series was looking at three great “wildernesses” which have been made national parks and investigating whether or not it’s really true that these are the last great spaces untouched by the hand of man. Each episode concentrated on the history of a particular national park – firstly the Serengeti, secondly Yellowstone and thirdly the Amazon rainforest (bits of which are national park but they were thinking about the whole region). The message was the same in each case – that the concept of untouched wilderness is really just a nasty little racist hangover from the days of white imperialism. In all three cases people have been living in and shaping the land and ecosystem for thousands of years. So the narrative of the “pristine, untouched wilderness” erases the native peoples from the picture – like the way we talk about the “discovery” of the Americas in the 15th Century despite there having been people living there for 12,000 years who thus discovered it some time ago. It’s a narrative that only works if you consider Europeans as the only “real people” in the situation.

It definitely succeeded in being a thought provoking series – we kept pausing it to talk about it while watching. I think there’s something to be said for keeping some parts of the world as a viable habitat for wildlife rather than just building cities over everything (in particular the Amazon which has a significant affect on global climate too). But the way in which these parks were created and the way the people who lived there were treated was appalling. In both the Serengeti and Yellowstone native people were moved out involuntarily and prevented from using the land the way they used to – but tourists could still go onto the land and often cause more damage than the locals would’ve. In the Serengeti big game hunters were positively encouraged at the same time as local people were prevented from hunting for food. Removal of people is also altering the ecosystems of the parks – for instance elk in Yellowstone grew in numbers to an extent where wolves had to be reintroduced to prey on them. The Amazon was even more complex – in that there was a significant reduction in population by diseases brought by the first Europeans, possibly up to 90%. So the human part of the ecosystem had collapsed prior to the attempt to preserve the “wilderness”, but the effects of that human population hadn’t entirely unravelled.

It’s difficult to know what can be done, tho. These ecosystems were sustainable with populations of about the size that they had, who lived in traditional ways. And the modern world inevitably changes that, and I don’t think any of it is in ways that should be prevented. Modern medical care keeps people alive for longer, so the population grows and consumes more. Once you’re aware of conveniences like clean running water and electricity you’re going to want them – and that requires space and resources. And these aren’t things you should deny people to keep them “traditional” enough to live somewhere. But how do you police the land use effectively? And without that turning into its own nastiness? And if the people were moved out a couple of generations ago like in the case of Yellowstone then do they still have the knowledge and so on to live the way their ancestors did?

So yes, a very thought provoking series with more questions than answers.

(The possible subliminal messaging was in the Serengeti one, btw – every time they switched from black & white footage to colour or vice versa there was a frame or two of a still image of two Masai standing against a sunrise (or sunset).)

Tales from the Royal Bedchamber was aired to coincide with the birth of William & Kate’s son. It was presented by Lucy Worsley (who did Fit to Rule that we watched last year), and was a chronological look at the bedchambers of the English & British royalty over the last 700 or so years. It wasn’t quite what I expected in that I was expecting more about the birth or not of heirs to the throne, but really it was about the beds and the rooms. So we were shown several rather nice looking beds from various points over the centuries. And she explained how pre-Victorian times the royal bedchamber was actually a state room – and the people who had access to it were some of the most important people in the country because they had the most access to the king.

I don’t think there was anything in this programme I didn’t already know, but it was nice to see the examples of beds etc.

Other TV watched last week:

Episode 1 and 2 of Rococo: Travel, Pleasure, Madness – three part series presented by Waldemar Januszczak about the Rococo art movement, as a sequel to his series on Baroque art.

Episode 1 of Border Country – programme about the history of the area of Britain around the England/Scotland border, presented by Rory Stewart.

Episode 1 of Mind the Gap: London vs the Rest – two-part series about the increasing gap between the economy of London and the economy of the rest of Britain.

Episode 4 of The First World War – a 10 part series covering the whole of the war.

Episode 1 & 2 of Pagans and Pilgrims – series about the sacred places of Britain, presented by Ifor ap Glyn

Inside the Animal Mind; Edward VII: Prince of Pleasure; Royal Cousins at War; The Great British Year

Inside the Animal Mind is a three part series presented by Chris Packham that looks at what we know about how animals think and what that tells us about our own thinking. The first episode covered animal senses, the second looked at how intelligent animals are and the third investigated the effects of being social on animal intelligence. In each episode Packham showed us the sorts of experiments currently being done to extend our knowledge of animal minds. For instance one of the questions he looked at in the first episode is how do dogs seem to know when their owners are due home from work? It’s not like they can tell the time after all. It turns out that this may have something to do with scent levels in the house – if you bring into the house something smelling of the owner earlier in the day, which increases the scent levels, then the dog doesn’t react at the normal time.

The first episode was mostly setting the scene for the meat of the series – making sure we knew a bit about how information gets into the animal brain. The next two episodes were mostly concerned with the overall question of how unique are humans. What, if anything, sets us apart from the other animals. So the second episode concentrated on some of the most intelligent animals – primarily a variety of crow species. These birds solve can solve complex puzzles, use tools and even plan for the future. That last was illustrated by an experiment where a couple of crows were kept in a large cage that could be partitioned into three – overnight they were kept in one end or the other, during the day they had free range of the whole cage (and were given plenty of food). They weren’t given a choice about which end of the cage they spent the night. If it was one end they would get breakfast in the morning before the partitions were removed, if it was the other they wouldn’t. So after that pattern had been established they were given places to hide food (little sandtrays) in each end of the cage. During the day they’d hide some of the food they were given, and they’d hide a significantly higher proportion in the “no breakfast” end – knowing that if that was where they ended up then they’d want more food in the morning than if they ended up in the breakfast room.

The last episode concentrated mostly on dolphins (tho also other intelligent social animals, like chimps). The idea is that being social helps to drive the development of intelligence and in particular intelligence to do with communication and recognition of others (and oneself) as individuals. Things we think of as human traits, and some of these traits take a while to develop in young children too – a child won’t recognise his or herself in the mirror until the age of 2, and the ability to realise that other people have other perspectives takes longer than that. Dolphins are one of the few animals to recognise themselves in a mirror – they had footage of a dolphin very clearly admiring himself in a mirror in the water. They also had some footage of how this was first observed – the biologists were observing dolphin mating via a one-way mirror, and when the dolphins realised there was a mirror there they oriented themselves so they could watch themselves while they were mating.

The series didn’t try to provide an answer to what sets us apart from animals – just pointing out that many of the things we think make us special have been found in at least one other species. And yet, there must still be something that means we are the ones with civilisation and advanced technology not the others, but we don’t yet know what that is.

I’d been expecting something a lot more shallow, so this series was a rather nice surprise. Worth watching.

We’ve started watching some of the World War I related programmes that the BBC are broadcasting at the moment. The first three that we’ve watched were sort of prequels to the war. The first was a biography of Edward VII (Edward VII: Prince of Pleasure), and the others were a two part series about the descendants of Queen Victoria who were ruling England, Germany and Russia by the outbreak of the war (Royal Cousins at War). I’m lumping these together to talk about because they had clearly been made by the same team, and had the same format and aesthetic. Each one had a (faceless) narrator, as well as a selection of experts on the subject, and they were very focussed on the biography of the individuals and how that intersected with the politics. At times that did make us feel they overstated the importance of (for instance) the English King in the politics of the day but mostly it stayed on the right side of the line.

The mission of all three programmes seemed to be to humanise the people they were talking about, and one of the tricks they used to do this was by colourising black and white photographs of them which suddenly makes them seem more real. In the two Royal Cousins at War programmes they also had video footage taken by the royals on their holidays – so all messing about a bit and hamming it up for the camera. And of course there’s a soap opera quality to the dysfunctionalness of Queen Victoria’s family. The Edward VII programme spent a lot of time looking at the way the relationship between Victoria and Edward was a vicious circle – she felt he was useless and shouldn’t be trusted with responsibility. So he frittered away his time on women and parties, and whenever he did get given something to do he’d end up doing daft stuff like showing official documents round to his friends to get opinions. Which then meant Victoria had proof he was useless. So that meant by the time he came to the throne no-one, not even himself, thought he was going to be any good at being King. As it turned out, he was good at the job – he was charismatic and much better than his mother at the public performance side of royal duties.

This is also the last hurrah of powerful monarchs in Europe. While Edward VII and his son George V didn’t have much overt power, as constitutional monarchs, they had even less after WWI was over. Their role was still important in terms of diplomacy, however. Edward’s ability to get on with people helped to sweeten relationships with countries such as France – a visit from Edward helped get public opinion onside before the “real diplomats” sat down at the negotiating table to discuss what became the Entente Cordiale. And George’s lifelong friendship with his cousin Tsar Nicholas helped shape the alliance between Russia and England.

At the other end of the spectrum Kaiser Wilhelm II and Tsar Nicholas were still autocratic rulers and so their personal qualities and opinions did have a large part to play in politics and foreign policy. They weren’t entirely free to do what they wished – public opinion and the opinions of their politicians did matter, but they had more genuine power than the British monarchy. And sadly neither were particularly competent. Tsar Nicholas seems to’ve epitomised “nice but dim” and combined this with a strong sense of his duty to preserve the authority of his throne. Which doesn’t end well.

The story of Wilhelm is the sort of thing that if you wrote it as fiction people wouldn’t believe it. He was the son of Victoria’s eldest daughter and she had been married off to the Kaiser Wilhelm I’s eldest son with a mission to liberalise Germany. Her husband (heir to the throne) is more liberal than his father and than Wilhelm II would turn out to be – so if only he’d lived to rule longer than a few months then history might’ve gone very differently. Wilhelm II had a very troubled relationship with his mother – he had had a difficult birth, and his left arm was damaged in the process. His mother couldn’t bear the fact that she had a crippled child, and Wilhelm himself felt inadequate – which only got worse as he got older and bought into the militaristic culture of Germany at the time. As future Kaiser he should be the epitome of perfection, and yet he was physically crippled. This sense of humiliation isn’t helped along by relations with his extended family. Edward VII was married to a Danish princess, whose sister was married to Tsar Alexander. Prussia had invaded Denmark, and defeated the Danes, in the 1860s and the Danish royal family had never forgiven them. So the two sisters would organise jolly family holidays … to which Wilhelm was not invited. He seemed to go through most of his life overcompensating for his disability and for his perceived lack of friends. He also seems to’ve been a rather nasty piece of work, too – so even tho some of it was out of his control, he did make his own problems worse.

These programmes were an interestingly different perspective on the run-up to World War I, and I realised how little I know about Germany of that era & Kaiser Wilhelm in particular.

We also finished off watching The Great British Year. This was a nature series, about the wildlife of Britain across the year. I don’t really have much to say about it – the point was very much the visuals, and they did have some spectacular footage 🙂 And there were red squirrels, but not enough of them for J’s tastes 😉

Other TV watched this week:

Episode 1 of Unnatural Histories – series about human influence on areas of the world that we traditionally think of as “untamed nature”.

Episode 1 of The First World War – a 10 part series covering the whole of the war.

Monday Link Salad

Those “something buried in the ice comes back to life” horror stories might not be so far fetched – so long as we’re talking about viruses anyway.

Suffolk Police warn, for the umpteenth time, about a current scam: the con artist rings up your landline claiming to be from the police or your bank telling you about suspicious financial activity on your account. They invite you to ring them back (using the 101 number or the number on your bank card depending who they’re claiming to be) but when you hang up they don’t – instead they play you a recording of a dial tone. When you pick up the phone and dial the new number you’re actually still connected to the original caller, so they then manage to con people into trusting them with financial info. So if you get that sort of call, ring back from your mobile or someone else’s landline (or leave it a while before you call from your own). People are scum 🙁

Cadence looks like an intriguing game, from the trailer.

“Generation V” by M L Brennan looks like an interesting book, sadly not in the library here tho.

And on the subject of books, I found an excuse for a notebook – I bought a book on Islamic geometric patterns and how to draw them with only a straight edge and compass (and pencil and pen). The first one I drew is this (photo on G+).

TV programmes/serieses I’m starting to record this week:

  • Fossil Wonderlands: Nature’s Hidden Treasures – three programmes about fossil beds, presented by Richard Fortey who did Survivors which we watched just recently (post)
  • How to Get Ahead – history series about how to get ahead at court.
  • The Plantagenets – three part series about the Plantagenet kings, presented by Robert Bartlett who’s done some other programmes I liked (and I have a couple of his books).
  • Hidden Histories – one-off programme about WW1 photographs taken by soldiers.

Monday Link Salad

This week I start my next Future Learn course – Shakespeare and His World.

I’m starting to quite look forward to Evolve (the new game from the guys who did the original L4D) … hopefully it doesn’t disappoint when it finally gets here 🙂

The Writ of Years is a delightfully creepy fairytale-esque short story.

I’m catching up (slowly, slowly) with reading at tor.com – Jo Walton’s post on if there’s a right age to read particular books caught my eye. I’m in agreement with Walton, I think. Even though I re-read less these days than I did as a kid, it’s odd to think that reading a book “too early” would do anything but mean you missed a bunch of stuff that you’d notice on a future read through (or fail to comprehend it entirely but understand it later).

More book stuff: I’ve set myself up an account on WWEnd which curates a list of authors & books who’ve won SFF awards or been on “must read” type lists. You can set what you’ve read and it gives you stats (like I’ve read 47% of all Hugo award winning books), they also encourage people to rate & review books. I’m about halfway through their list of authors marking what I’ve read that I remember (although only rating stuff I’ve read recently). (I was going to link to my account, but I can’t seem to find a way to directly link to it, oh well.)

Mass groups of whale fossils found in Chile – probably the result of at least four different mass strandings caused by a group of whales eating toxic algae then their dead bodies being washed up on shore.

10 Facts about Ichneumonidae describes these parasitic wasps near the start of the article as “think chestburster from Alien, but for insects.”.

Less creepily here’s 37 photos from history ranging from the moving to the “wtf?” (particularly the baby cage for ensuring your infant offspring get sufficient sunlight and fresh air if you live in an apartment block). Thanks to J for that link 🙂

I think I’ve seen this before, but it’s pretty striking – due to different streetlight lightbulbs you can still see the East/West divide in Berlin.

The only new TV programme I’m setting to record this week is When Albums Ruled the World next Monday – but the BBC’s schedule page was a little broken this morning and I’ve not been able to look at what’s showing on Saturday & Sunday.

Pilgrimage with Simon Reeve; Survivors: Nature’s Indestructible Creatures

Pilgrimage with Simon Reeve was a three part series that was partly a travelogue and partly about the history of Christian pilgrimage across Europe and the Holy Land from medieval times through to the modern day. Reeve made it pretty clear several times that he’s not a Christian himself, so this was an outsider’s view on the subject. He did, however, talk to several people who do pilgrimages for religious purposes today, so we got both sides of the subject represented. The first episode started in Lindisfarne and made its way down to Canterbury and mostly talked about medieval experience of pilgrimage. Then the second episode went through France and Northern Spain to Santiago de Compostela, and then across the alps to Rome. The third episode went from Istanbul to Jerusalem (via Bethlehem).

Reeve seemed focussed primarily on the question of what people get out of pilgrimage. His conclusions were that as well as the visiting of spiritually significant sites the journey itself has spiritual benefits for the people who do pilgrimages. They have a time to step outside of their daily lives and reflect on how they’re living and what they’re doing with their lives. Be that in a religious sense or a purely spiritual sense, various of the modern pilgrims he talked to weren’t people who called themselves Christian.

It wouldn’t be a Simon Reeve programme if it didn’t also look at the less uplifting parts of the subject! In the last episode there he was travelling through the West Bank (as one has to, if one’s visiting Bethlehem), and took the opportunity to contrast the modern political situation with the spiritual significance of the region to so many people. Another example was his visit to a very modern cult centre – the town where Padre Pio lived, who died in 1968. This has a massive new cathedral, a TV station of it’s own (run by monks), lots of fancy hotels in the town for all the touristspilgrims. And various rumours of how he kept his stigmata open during life by the judicious application of carbolic acid … He was canonised, but Reeve implied that was more an attempt by the Vatican to keep it in house so’s to speak. The cult was growing up anyway, so he was officially made a saint.

An interesting series 🙂 And in a piece of serendipity the first episode overlapped in subject matter with the end of Neil Oliver’s recent series about Sacred Wonders of Britain that we’d just finished watching (post). The second episode had some overlap with the second episode of Waldemar Januszczak’s series about Baroque art which we’re also watching at the moment. The three presenters have very different styles so it was interesting to get the various perspectives all so quickly together!

The other series we finished watching this week was Survivors: Nature’s Indestructible Creatures – a three part series about species that didn’t die out in mass extinction events presented by Richard Fortey. Each episode covered a different extinction event, and Fortey tracked down 10 species that survived it through to modern times. The first one was about the Great Dying (which occurred 252 million years ago) which is the most significant extinction even with the greatest die-off of species. For this one he looked at things like horseshoe crabs, sea cucumbers and lampreys. The second covered the KT boundary – i.e. death of the dinosaurs, so had an emphasis on birds, mammals and crocodiles. And the third one looked at the Ice Age and at the cold adapted species that made it through to our own times.

This was definitely more my sort of thing than J’s. I thought it managed to combine a bit of geology, a bit of evolutionary biology and a bit of modern day travelogue into an interesting whole (even tho I think I knew of most of it before, it’s nice to actually see things sometimes). Fortey was an engaging presenter, who was also pretty entertaining as he tried to handle live specimens with varying degrees of success and comfort. I had a great deal of sympathy with that as someone who’s significantly worse at handling live animals than he was yet is still a biologist 🙂 Oh, and it also had a running theme of Fortey eating some of these survivors & telling us how they taste, which was a slightly odd (but fun) addition.

Other TV watched this week:

The Coffee Trail with Simon Reeve – one-off programme about coffee growing in Vietnam. Vietnam is the main supplier of coffee for the instant coffee trade, and it’s as exploitative a trade as you’d expect. The regime in Vietnam isn’t particularly nice either.

Episode 2 of Baroque! From St Peter’s to St Paul’s – gloriously over the top series about Baroque art and architecture, presented by Waldemar Januszczak.

Episode 1 of The Stuarts – a series about the Stuart Kings of England & Scotland, presented by Clare Jackson, and about how they shaped the United Kingdom and how they were shaped by it. Broadcast on the Scottish version of BBC2 only.

Nigel Slater’s Great British Biscuit – a similar programme to Slater’s previous one on sweets (post), part nostalgia, part history of biscuits. Lots of “oh I remember those” moments 🙂

Greek Myths: Tales of Travelling Heroes – programme presented by Robin Lane Fox about the early Greek myths about the origins of their gods. Also looking at the links between the mythological stories and the landscape the Greeks knew, and also the links to Hittite mythology. We both had quite a lot of deja vu watching it, and figured out eventually that we’d watched it before about 3 years ago and had just forgotten (brief post on my livejournal). Interesting & worth watching, even for a second time 🙂

In Our Time: Cosmic Rays

We’re back to listening to episodes of In Our Time on Sunday mornings. The one we listened to this week was about that staple of 1930s science fiction – cosmic rays. The three experts who were talking about the reality of this phenomenon were Carolin Crawford (University of Cambridge), Alan Watson (University of Leeds) and Tim Greenshaw (University of Liverpool).

Cosmic rays were discovered about a century ago. The first indications that they existed came from detection of increasing radiation levels as you go higher up in the Earth’s atmosphere. At first they were assumed to be photons and the name “cosmic rays” was coined. This turns out to be a misnomer, they are in fact charged particles – bits of atoms. Some of them are atomic nuclei, some are electrons and some are more exotic things like positrons. They travel at a variety of speeds, from a variety of sources. Crawford told us that they are categorised into three broad groups. The first of these are relatively slow-moving particles that come from relatively local sources – the sun for instance – and are very common. These are the particles that are involved in creating the Aurora Borealis. The next group are moving more quickly, and come from further away – generally these are thought to be generated as as side-effect of supernova explosions. And the last group are the fastest moving and are thought to be from outside our galaxy, these are the rarest type of particle.

The particles aren’t detected directly (on Earth) instead what we detect is the side-effects of these particles hitting the Earth’s atmosphere. As the particles collide with atoms in the upper atmosphere they generate a shower of secondary particles and it’s these that are detected. The types and numbers of these particles can be used to work out what hit the atmosphere, how fast it was going and the direction it was travelling. We know they are charged particles (and which charge) because of the effects of the Earth’s magnetic field – the number of particles hitting the atmosphere varies with latitude with most of them at the poles. This is also why the Aurora Borealis are mostly at the poles. That phenomenon is formed by the particles exciting the electrons in atmospheric atoms, when the electrons return to their original energy states they emit light. They went off into a slight digression on the programme when talking about this – predicting the Aurora Borealis requires prediction of solar weather and that’s being worked on because particularly bad solar weather can lead to EMPs that can affect satellites.

All three experts agreed that the fastest moving group are the most interesting – in part because we still don’t know much about where they come from or how they’re generated. They’re pretty rare, so a normal sized detector (I don’t think they said how big) would only detect about one a century – so Watson was talking about a project he helped set up that built a detector the size of Luxembourg and this detects 3 or 4 of these rare particles a year. One theory of where they come from is that they are generated in galaxies with super massive black holes at the centre. Another is that they have something to do with dark matter.

Particle physics as a discipline grew out of the study of cosmic rays. The Large Hadron Collider does under controlled conditions what cosmic ray particles do when they hit the atmosphere. This is another reason why the fastest particles are the most interesting – they travel at a much higher speed than the LHC can achieve. The fastest moving particles travel faster than the speed of light in air, generating Cherenkov radiation. Again the programme took a little digression to explain this. Light travels at different speeds in different media – and so these particles aren’t travelling faster than light does in a vacuum (like the space the particle was just travelling through), it’s just that they don’t slow down when they enter the atmosphere. So the radiation that is released in front of the particle is moving slower than the particle and so can’t move away from the particle. It’s effectively being pushed along in front of the particle and that’s what we detect as Cherenkov radiation. It’s a bit like the sonic boom you get when something breaks the speed of sound.

As an aside – something I didn’t know before was that 14C dating is a direct result of cosmic rays. The 14C in the atmosphere is generated by cosmic ray particles hitting nitrogen atoms, if cosmic rays didn’t exist we’d not have such a good way of dating organic material (like bones).

Future work on cosmic rays is quite concentrated around figuring out what the fast ones are. There is also data being gathered more directly on the particles involved. The ISS currently has a cosmic ray detector fitted to the side of it, which has been gathering data since 2011 and is planned to continue for ten years.