An interesting and very different idea
snip
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A series of papers from the lab of Carl Simpson proposes an answer linked to a fundamental physical fact: As seawater gets colder, it gets more viscous, and therefore more difficult for very small organisms to navigate. Imagine swimming through honey rather than water. If microscopic organisms struggled to get enough food to survive under these conditions, as Simpson’s modeling work has implied, they would be placed under pressure to change — perhaps by developing ways to hang on to each other, form larger groups, and move through the water with greater force. Maybe some of these changes contributed to the beginning of multicellular animal life.
To test the idea, Simpson, a paleobiologist at the University of Colorado, Boulder, and his team conducted an experiment designed to see what a modern single-celled organism does when confronted with higher viscosity. Over the course of a month, he and his graduate student Andrea Halling watched how a type of green algae — members of a lab-friendly species that swims with a tail-like flagellum — formed larger, more coordinated groups as they encountered thicker gel. The algae collectively motored through the fluid to keep up their feeding pace. And, intriguingly, the groups of cells remained stuck together for 100 generations after the experiment ended.
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the media and trump
TRUMP: I love dictators. I want to be a dictator.
MEDIA: Are Trump's policies a cause for concern?
TRUMP: I will abolish democracy.
MEDIA: Is it unfair to portray Trump as authoritarian?
TRUMP: Read my lips: I am a fascist.
MEDIA: Hmm, only time will tell for sure.
18:43 in Current Affairs, General Commentary | Permalink | Comments (0)