An 11th-century ruin in a dusty reservoir has become one of the most striking images of Spain's record drought, which already has forced Barcelona to ship in drinking water for the summer.
Captive pandas were observed acting strangely before Monday's devastating quake, mirroring previous accounts of animals reacting before disaster strikes.
Watch young chimpanzees beat Japanese college students in a short-term-memory test by a wide margin—raising questions about primate intelligence and evolution.
Jaw and facial structures in the ancient human relatives show that they could open unusually wide, although researchers are stumped as to why they had this ability.