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National Geographic and me

25 February 2015 by Simon Barnes 4 Comments

National Geographic and me

 

           My book Ten Million Aliens was published in the United States last week, and at the weekend, National Geographic ran an interview with me on the Booktalk part of their website. You can see it here: http://news.nationalgeographic.com/news/2015/02/150222-book-talk-barnes-darwin-slugs-wilson-hunting-wasps-world-land-trust/

So to celebrate, here’s another chapter from the book.

 

Who needs oxygen?

            This book would have been shorter if I had written it in 1982, instead of working on a rightly-unpublished novel and seeing if I could make beer come out of my ears. It’s not that my stamina has improved: they discovered a new phylum in 1983. That is to say, a group of animals as different from anything else on earth as we humans are from butterflies: and one no one knew about – which goes to show that there is an awful lot going on on this planet. They are Loricifera and they live in the spaces between gravel. Not big, then: they range from minute to microscopic. Under magnification they look rather like a vase of flowers: a tentacled container. The container is called the lorica, hence the name. They are found in the sea at all depths and latitudes. They have a head, mouth and digestive system, but no circulation. There are about 100 known species, of which about half have been described and named. They are both abundant and ubiquitous: thought it took us a long time to find out about them.

They sound a pretty undistinguished lot on the whole – but three of those species can claim to be the strangest animals on the planet. They are found at the bottom of the l’Atalante basin in the Mediterranean. Not only is it totally dark down there: there is no oxygen either. The water is so salt that it is near-saturated, and doesn’t mix with the layers above. That means there is no oxygen: but the Loriciferans thrive down there nonetheless. There are living things from outside the animal kingdom that thrive without oxygen, bacteria and viruses, but this is an animal: a multi-celled being from the same division of nature as ourselves. Loriciferans are the only animals of that degree of complexity that can live without oxygen. Unlike the rest of us, these three Loriciferans don’t operate at the cellular level on mitochondria, which require oxygen. Instead, they employ organelles driven by hydrogen.

This is so peculiar that it forces us to change our definition of life, and with them, our idea of the conditions necessary for life to take place. Multicellular animal life can happen without light and without oxygen. That is quite interesting in a philosophical sort of way. It is quite startling when you start thinking about life beyond the earth. Our search for life beyond the earth is no longer restricted to oxygen-rich environments. Once again, we find that life is weirder than we think: and more varied than we think. And perhaps more widespread than we think.

 

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Comments

  1. Tom C says

    25 February 2015 at 1:52 pm

    Simon, I loved the National Geographic interview. The more I read by you and about you, the more I recall great days together.

    Reply
    • Simon Barnes says

      11 March 2015 at 2:52 pm

      We managed the odd good one here and there, did we not? Best, as always.

      Reply
  2. Brian Goldfarb says

    28 February 2015 at 11:28 pm

    Only sort of on topic(!), we were in New York last week, visiting family, and, despite the biting cold, we walked across Central Park on one of the days. While there, we noticed first one, then three raptors swooping around one particular tree. Someone else had stopped and was talking to a Park Ranger, so we stopped too (and so did others, the sight was so breath-taking). These were three Red-Tailed Hawks, juveniles, zooming around trying to figure out how to make a meal out of a canny squirrel scampering around a tree – and too smart to leave the tree for the ground.

    We crossed the road and chatted with the ranger and the other person, agreeing that it was fortunate for the squirrel that these were juveniles.

    Nothing out of the ordinary for Central Park in the middle of Manhattan, but a reminder that nature is more wonderful than we can imagine – even in near zero temperatures with thick snow on the ground.

    We went on our way to the Metropolitan Museum of Art lighter of heart than when we entered the Park, delighted that we had witnessed such a scene.

    Reply
    • Simon Barnes says

      11 March 2015 at 2:54 pm

      I once saw a red tailed hawk carrying a lizard over the rose bowl in Pasadena during the football world cup of 1994.

      Reply

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