This is a microscopic image of a porcupine quill. Harvard medical researcher Jeffrey Karp and his colleagues are studying the quills to determine whether they might inspire a new design in hypodermic needles. According to their paper published today in PNAS, the barbs on the quill enable it to slide in smoothly but keep it in place, characteristics that would be useful in, say, an IV drip. (Smithsonian)
Nick Sousanis, who delivered his doctoral dissertation in comic book form, has a new comic in the current Nature magazine, explaining the last 25 years’ worth of climate talks, as a primer in advance of the Paris climate talks next week.
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