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.
Tigers and other “exotics” have become hefty commodities in the U.S.
Shared child care may be the secret of human evolutionary success.
Reef-building sponges are giving up their long-held secrets.
The flexible neck of the Amazon River dolphin let it hunt masterfully in the muddy shallows of the Amazon Basin.
Forensic anthropologists do facial reconstruction from remains of two crewmen found on the USS Monitor
The evolution of disgust