Discoveries of more complete remains of cartilagenous fishes have shed new light on the prehistory of sharks and their relatives.
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