Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are ...

This photo shows how gigantic an Irish Elk looks compared to two humans. Megaloceros giganteus - literally "giant horn" - is ...

Few people know that the Zebra had a close relative, native to South Africa, that went extinct in the late 1800s. Here’s its story. Countless species have come and gone in the short history of life on ...

For months, researchers in a laboratory in Dallas, Texas, worked in secrecy, culturing grey-wolf blood cells and altering the DNA within. The scientists then plucked nuclei from these gene-edited ...

On April 7, the biotechnology company Colossal Biosciences announced it had brought dire wolves back from extinction, explicitly stating it was "the rebirth of the once extinct dire wolf." Now, its ...

Ever wonder how saber-toothed cats and other extinct creatures behaved? Well, a team of scientists unearthed ancient footprints that offer insight into how various prehistoric animals lived as far ...

Prominent research studies have suggested that our planet is currently experiencing another mass extinction, based on extrapolating extinctions from the past 500 years into the future and the idea ...

For months, researchers in a laboratory in Dallas, Texas, worked in secrecy, culturing grey-wolf blood cells and altering the DNA within. The scientists then plucked nuclei from these gene-edited ...

Once upon a time, the likes of Michael Crichton and Steven Spielberg imagined a world where scientists on the cutting edge of genetic research pieced together bits of DNA, both ancient and modern, to ...

Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013. Her work has previously appeared on MTV, The Frisky, Vice, and Best Friends Magazine. Curiosity Stream/YouTube ...

Earth's biodiversity is in crisis. An imminent "sixth mass extinction" threatens beloved and important wildlife. It also threatens to reduce the amount of genetic diversity—or variation—within species ...