A new study of 2,600 vertebrates has revealed that brain size grows fastest when warmth and newborn size align.

As humans change the environment, various species are forced to adapt or perish. Some cliff swallows learn to avoid swift highway traffic. Some Atlantic tomcod find ways to resist river pollution. A ...

The next time you go wild swimming, whether in a lake, river or sea, you are probably sharing the water with one of your ...