Sea urchins may just look like a ball of spikes waiting to be stepped on at the tide pool, but there's much more to these barbed beasts than just roe and teeth . New research reveals sea urchin nervous systems are far more complex than we knew. These creatures, it turns out, possess 'all-body brains' and, at least in their genetic layout, they are remarkably similar to our own. A team of scientists led by developmental biologist Periklis Paganos from Stazione Zoologica Anton Dohrn in Italy made

Tag-uri: Italia