Tiny skaters beneath the arctic ice rewrite the limits of life
But new research from Stanford, published Sept. 9 in Proceedings of the National Academy of Sciences, revealed Arctic diatoms aren't immobile or entombed. They're not just surviving either - they're gliding into the record books. "This is not 1980s-movie cryobiology. The diatoms are as active as we can imagine until temperatures drop all the way down to -15 C, which is super surprising," said Manu Prakash, associate professor of bioengineering in the Schools of Engineering and Medicine and senior author of the paper. That temperature (5 F) is the lowest ever recorded for movement by a eukaryotic cell - the type of complex cells in plants, animals, fungi, and more, defined by having a nucleus inside a membrane. "You can see the diatoms actually gliding, like they are skating on the ice," said lead author and Stanford postdoctoral scholar Qing Zhang, who collected the samples during an Arctic research expedition. She and her colleagues demonstrated not o...