The secret, social lives of bacteria
Centuries of astronomy, plus video-game technology, offer a stunning new perspective on our place in space.
Why do some female bovids have horns, whereas others don’t?
A rare bird’s elaborate mating habits help a tropical tree disperse its seeds.
Elizabeth Blackburn's work on telomeres led to new research and discoveries
Vampire bats display adaptations to their diet
Scientists race to understand the reproductive biology of freshwater eels.
Are double-crested cormorants overrunning their niche—or recovering from centuries of suppression?
Contagious laughter, yawns, and moods offer insight into empathy’s origins.
For thirsty sea snakes, the ocean can be a desert.
Elephant populations continue to dwindle in Tanzania.
With proper safeguards, water currents can be harnessed out of sight.
Barely pulled back from the brink of extinction, California condors are still being poisoned by lead-based ammunition.
Vulnerable everywhere in the wild, lions already face regional extinction.