Add Yahoo as a preferred source to see more of our stories on Google. Cope's Rule, a classic evolutionary theory, states that animals tend to grow larger through evolutionary time. But there are lots ...

There are many purposes that spots and stripes serve in nature, but how they form has been more of a mystery to scientists. Now, researchers have advanced their breakthrough theory – and it could help ...

Comments from Chronicle.com about “Creature Consciousness” by Jennifer Howard (The Chronicle Review, October 23): If the boundary between “animal” and “human” is to be eliminated (as appears to be a ...