In the 1980s, one young scientist solved the mystery of how animals without mouths and guts manage to feed themselves.
After a Vietnam veteran encountered a grizzly bear in Yellowstone, he pledged to dedicate his life to protecting the animals.
Birds aren’t humanity’s only bird-flu worry.
What science can tell us about how other creatures experience the world
Early apes’ ability to metabolize alcohol increased about 20-fold due to a single-point mutation in their genes.