Sen. Thom Tillis of North Carolina said Sunday he will not seek reelection next year, a day after announcing his opposition ...

Thylacines — marsupials known as Tasmanian tigers — were declared extinct decades ago, but efforts to find one in the wild ...

More than 35 species of falcons roam the Earth’s skies at present. But there used to be at least three others. Here’s the story of the confirmed falcon species lost to the world forever.

"Only volunteers have been trying to clean things up." Beachgoer shares disturbing photos of unbelievable discoveries along ...

Extinct for nearly a century, a rediscovered 90-year-old film offers a rare glimpse of an Australian species before its ...

"Exciting and quite unexpected." Experts stunned after trail cameras capture rare species previously thought to be extinct: ...

In Northern California, a photographer had an extraordinary find when his remote camera captured rare footage of a Sierra ...

Fusulines thrived in cold seas but vanished twice when warming from volcanoes rapidly spiked ocean carbon levels.

Giraffes, flamingos and seals are just a few of the animals you’ll see at this incredible zoo in the heart of Chicago. Rare ...

A group of hikers in the San Gabriel Mountains just outside Los Angeles got a rare treat when they stumbled upon a flock of ...

In a heartening development, conservationists reintroduced platypuses to the Hacking River in New South Wales, Australia.

Randy Robbins, a California-based wildlife photographer, said his camera captured rare footage of the "highly threatened" ...