Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across ...

Each species has specific rituals to attract mates, and success typically comes from doing what is expected (and doing it ...

When people think of wildlife trade, they often picture smugglers sneaking in rare and endangered species from far-off countries. Yet most wildlife trade is actually legal, and the United States is ...

Fish often avoid intense stimuli, but scientists and animal welfare groups have long debated whether fish can feel pain. So is there an answer? Animal rights organization PETA claims on its ...