LifePenis worms had hermit crab-like defence system 530 million years ago More than half a billion years ago, tiny penis worms had learned to protect themselves by grabbing and living inside snail-like shells, like hermit crabs do today News
LifeBarn owls make mental maps of their surroundings while they are flying Neurons that help humans make mental maps, called place cells, have now been seen in flying birds for the first time News