This endangered sea turtle was found in rough shape on a Texas beach. What happened next is giving researchers hope.

During the Early-Middle Devonian period, a large landmass called Gondwana—which included parts of today's Africa, South America, and Antarctica—was located near the South Pole. Unlike today's icy ...

Lost fossils reveal that some of the first ocean predators went global astonishingly fast after Earth’s worst extinction.

Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are nowhere to be found. From human activity to climate change, new ...

Over a million species of animals and plants are now hanging by a thread, more than ever before in human history, says the International Science-Policy Platform on Biodiversity and Ecosystem ...

No other animal is as inexorably linked with extinction as the dodo, an odd-looking flightless bird that lived on the island of Mauritius in the Indian Ocean until the late 17th century. The ...

LOS ANGELES -- The vaquita porpoise lives only in the Northern Gulf of California. They are shy animals that only hang out in small groups and because of that not many people have seen them. Vaquita ...

How scientists (and the rest of us) are finding 16,000 new species a month.

(Gary Braasch / Corbis) When Polynesians arrived at the uninhabited Hawaiian Islands thousands of years ago, they found an array of colorful tree snails, each less than an inch in length, across the ...