Everyone has to sleep sometime, no matter what. Despite all of our differences, every single person in the world can agree that sleeping is both important and awesome. There's nothing better than ...

New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

Pigeons respond to the gaze of their peers, with growing numbers leading to stronger social attention - just like in human crowds.