An African park infamous for gorilla murders is reeling from fresh rebel attacks captured in a harrowing video. The fighting threatens the Congo park's 72 mountain gorillas.

The first ever photo of a live Sumatran muntjac is also the first record of the species in 80 years and establishes the muntjac as a "new" species, exerts say.

The discovery at a Virginia aquarium marks the second time scientists have used DNA testing to verify what would have been a "virgin birth"—if the pups hadn't died.

A controversial fossil find suggests that animals were walking around the planet about 570 million years ago—30 million years earlier than previously believed.

Bird species worldwide are in decline—a sign that the planet's health is also faltering, according to a new report.

African pirates threatened Friday to blow up the arms-laden Ukrainian ship they've hijacked--the latest salvo in a crisis that's boosting shipping costs and cutting off aid to millions of Somalis.

The Western Wall, the Queen Elizabeth 2, Iceland's financial meltdown, and more are featured in our picks of the week's news photos.

A "hairy" crab, spiky sea stars, and a bright red shrimp are among the 274 new species found during a research survey of Australia's deep ocean.

The biggest land animals that ever lived grew huge and were an evolutionary success in part because they swallowed large quantities of food whole, new research suggests.