Disneynature’s latest Earth Day release hunkers down in an Ivory Coast rain forest, taming its beasts-in-the-wild raw material into a family-friendly (though not totally sugarcoated) ...

Friendly behavior is "contagious" among chimpanzees, according to a new study. The primates are more likely to groom or play with each other if they see others do it first, say scientists. They ...

When people talk to each other, their conversations usually include many fast twists. Humans do not naturally talk in Shakespearean soliloquies, but by regularly interrupting and wildly gesticulating.