Scientists have sequenced the genome of the Aldabra giant tortoise, one of only two remaining giant tortoise species in the world.

Published in 1962, ‘Silent Spring’ called attention to collateral damage from widespread use of synthetic pesticides. Many problems the book anticipated persist today in new forms.

Sharks are much more severely threatened by humans than vice versa. A marine biologist explains how people can help protect sharks and why some strategies are more effective than others.

Researchers pulled a coelacanth caught in 1960 from its jar of alcohol in a museum and gave it an MRI. Doing so reveals some of the fish's mysterious ways.

The Soviet Union was a latecomer to industrial whaling, but it slaughtered whales by the thousands once it started and radically under-reported its take to international monitors.

The iconic monarch butterfly has been added to the Red List of endangered species, but hasn’t received protection in the US yet. That’s not necessarily a bad thing.

Fernanda the tortoise is the only of her species discovered on the Galápagos island of Fernandina since 1906. She has baffled evolutionary biologists.

After an entanglement with fishing gear, most North Atlantic right whales die witin three years. Estimates say there are fewer than 350 left in the wild.

The recent goring of a tourist who approached within 10 feet of a bison in Yellowstone National Park is a reminder that wild animals can be dangerous and people should keep safe distances.

A new study highlights another threat facing endangered koalas, but could also lead to ways to treat populations and reduce the risk of extinction.