sticky stuff

Earlier this year, I reviewed a book about biological adhesives and was intrigued by the large diversity of interesting materials that haven't been investigaten in much detail yet. I've further explored this field in a feature article which is out in this month's issue of Chemistry World:

Getting stuck in
Chemistry World 8, no. 12, pp 52-55

restricted access

inverted moons

Love the story about the inverted moons on christmas cards: Your moons are rubbish, astronomer tells Christmas card artists

I should just add that one doesn't need to know about waning moons and what time they rise - it is completely sufficient to know that both Sun and Moon move from left to right in the sky (seen from the Northern hemisphere outside the tropics) and that the bright side of the moon points towards where the Sun is. So in the wrong xmas card, the bright side points to the left, so the Sun is trailing the Moon and will rise in a couple of hours, so it must be early morning. For an evening scene, you want a Sun that has recently set, so bright side of the Moon must point to the right. Simples.

Are these artists the same people who insist on putting inverted helices on the covers of books and magazines, I wonder ...

dancing about science

My feature article about science-inspired dance, and Aesop's fable -inspired science is out in today's issue of Current Biology:

Dances with magpies
Current Biology, Volume 21, Issue 22, R905-R907, 22 November 2011
doi:10.1016/j.cub.2011.11.008


Summary and free access to PDF file

A European magpie (source)

Rambert Dance Company

water world

My review of

Sex, drugs and seaslime: the oceans’ oddest creatures and why they matter
by Ellen Prager
University of Chicago Press 2011

has appeared in Chemistry & Industry, issue 21, page 27 (restricted access)

Here's a snippet:

[...] as a taster of the overwhelming biological diversity that is out there in the oceans, the book is certainly a stimulating read. Given the amount of slimy, shapeshifting, limb-regenerating, and deadly poisonous weirdness found in its pages, it is intriguing to think about what we may still be missing in those 91 % of marine species that remain to be discovered.

Neanderthals old and new

Way back in the summer of 2003, Firstborn and I did some volunteer work helping to dig for Neanderthal remains in a cave in the Murcia district, Southern Spain. A single Neanderthal tooth that my daughter spotted was the most exciting thing that the hard work of 15 or so people produced during an entire week. There was also a femur head (the “ball” of the hip joint), but it was impossible to tell whether it was hominid or perhaps from a large mammal such as a deer. See my book The birds, the bees and the platypuses (pp77-80) for a more detailed account of our Neanderthal adventures.

I never went back to the cave and lost contact with the research team in the following years. Imagine my surprise then, as I researched an article on modern (genomic, imaging, etc.) methods of research into Neanderthals and found out that in the years 2005-2008, the very cutting where we had scraped around for a week had yielded skeletons with articulated parts of three Neanderthal individuals, found in an arrangement that suggests they may have been buried ritually (with their hands close to their heads, as has also been observed in other Neanderthal graves).

Given the slow progress of the excavation, which is carried out only during the summer months, we must have been less than a metre away from those skeletons. While there have been similar finds further north in Europe, this burial site is a first for the Mediterranean coast, and it may allow comparative studies re. how Neanderthals lived under different climate conditions. Sadly, however, attempts to retrieve DNA from the Spanish Neanderthals have remained fruitless. It appears that the genetic material doesn’t survive very well in the hot climate of southern Spain.

The discovery and excavation of the three skeletons is described in great detail in

M. J. Walker et al., Quaternary International 2011 (in press), doi:10.1016/j.quaint.2011.03.034

As the cleaning and detailed characterisation of each skeleton proceeds, individual studies will also become available. The first one appeared in September in PNAS:

M. J. Walker et al., Proc. Natl. Acad. Sci. USA 2011, 108, 10087

Oh, and my news feature on how genomics, imaging etc. is revolutionising palaeoanthropology is out in Current Biology today:

Virtual Neanderthals
Current Biology, Volume 21, Issue 21, R871-R873, 8 November 2011
doi:10.1016/j.cub.2011.10.031

Abstract and FREE access to PDF file

Shakira live from Paris

As I've seen Shakira's Sale el Sol tour only twice, I can't wait to get the DVD, which is out on December 6th, as has just been officially announced. Full details are here. As the title suggests, the show was filmed at the Bercy, Paris, but not during the December 2010 gig that I saw. There were an additional two shows at the Bercy in the summer of 2011 which were used for the DVD.

As the UK distribution is hopeless again (amazon.co.uk offers the DVD for an astronomical price of £ 26.75 and doesn't give a date when it might be available!), I've ordered my copy from amazon.de.



Oh, and there is a new live video out to promote the DVD, it's Antes de las seis from the Sale el Sol album. One of my favourite songs.

dying stars

The current issue of Chemistry & Industry contains my review of the book:

From dying stars to the birth of life
by Jerry L. Cranford, Nottingham University Press

which is an attempt to popularise astrobiology. I can't really recommend the book, for the reasons outlined in my review, so I'll just politely fall silent here ...

tintin revisited

Dear Mr Spielberg,

many thanks for offering your 3D, motion captured, animatronic, and everything else take on the Tintin stories, but I'm afraid I've decided to stick with the original:



This edition of "Le secret de la licorne" (the secret of the Unicorn) is even older than me, not dated, but from the list of other Tintin adventures on the back, it must have been printed between 1960 and 1963.

For some deeper insights into the Tintin oeuvre, see the brilliant book Tintin and the secret of literature by Tom McCarthy, which I reviewed here.

PS: Further reasons not to watch the film:

why the CGI doesn't work and only produces zombie impressions (interesting in that it tells us how our brains process people images differently from everything else!)

Tom McCarthy on how Spielberg missed all the interesting bits in Tintin

Peter Bradshaw's review of the film

Nicholas Lezard trying to cope with the trauma the film inflicted on him

PPS Art critic Jonathan Jones tries to mediate between Tintin fans and those who appear to like the movie.

illuminating brain function

As I have followed the story of bacteriorhodopsin - the biological computer that never happened - for many years now, I was very pleased to learn that somebody found something very clever to do with this and similar microbial opsins. Specifically, the recently developed methodology of "optogenetics" involves expressing microbial light-responsive ion channels or pumps in neurons, meaning that one can activate or inactivate these neurons by shining light of a certain wavelength onto them.

Stanford researcher and practicing psychiatrist Karl Deisseroth, who invented the method and pioneered its use, is keen to apply it directly to psychiatric questions. Others think a few fundamental things need to be sorted out first. Read more about all this in my feature, which is out in today's issue of Current Biology:

Shining new light on the brain
Current Biology, Volume 21, Issue 20, R831-R833, 25 October 2011
doi:10.1016/j.cub.2011.10.007
Summary and free access to PDF file

walking with molecules

Among the molecular motors of the cell, there are quite a few that appear to walk on two legs like we do. However, the rules in the nanoworld are very different from our world. Walkers there can't rely on gravity to keep them connected with the track, and they have to muddle through the chaos that is Brownian motion.

Researchers have been able to build synthetic walkers from DNA for a few years now, and recently have also introduced the first small molecule walker that matches the key criteria of the walking molecules in the cell.

I wrote a feature about all this which is out in Chemistry & Industry this week:

Walking in the nanoworld
Chemistry & Industry issue 19, pp 20-22

free access to full text (html)



A couple of macroscale walkers appear on the cover of the issue by coincidence.

don't play with food

Following the deregulation of the finance markets in the early 00s (whose bright idea was that?), finance people have discovered food commodities as a new toy to play with, and the prices have become unpredictable and decoupled from the real world parameters such as supply and demand. While the guilty parties deny that their gambling has any impact on the real world, experts increasingly believe that speculation does drive real people into real hunger.

For more info about this scandalous situation (and some of the science behind it, including, again, herding), read my feature in today's issue of Current Biology:

Don't play with food
Current Biology, Volume 21, Issue 19, pages R795-R798, 11 October 2011
doi:10.1016/j.cub.2011.09.037

summary and free access to pdf file

On the same issue, the World Development Movement (also mentioned in my feature) have today issued a press release:

450 economists call on G20 finance ministers to stop speculation fuelling hunger

October crop

the roundup of German pieces in October has philosophical insights gained in mitochondrial research, RNA scaffolding in synthetic biology, crop protection, and an appreciation of the conical flask / Erlenmeyer flask on its 150th birthday.


Die Energie der Mitochondrien und ein bewegtes Forscherleben, Spektrum der Wissenschaft 2011, Nr 10, 100. (review of "Feuersucher" by Gottfried Schatz)

RNA-Gerüst bringt Ordnung in die Zelle, Chemie in unserer Zeit 2011, 45, 351
restricted access to PDF file

Ungestörtes Wachstum erwünscht, Nachrichten aus der Chemie 2011, 59,966

Eine schräge Geschichte, Nachrichten aus der Chemie 2011, 59, 936



Erlenmeyer's original design drawing, apparently. Source: wikipedia