More than 99% of all species that have ever lived are now extinct - and today, many scientists believe we are driving a sixth mass extinction. From the baiji dolphin of China’s Yangtze River to the ...

In April of 2025, headlines across the world announced that the dire wolf had been brought back from extinction. This 130-150 lbs wolf species, about 25% heavier than modern-day gray wolves, had not ...

Lazarus taxa, where a species is declared extinct but later learned to be alive and kicking, is the reason people think the ...

Three genetically engineered wolves that may resemble extinct dire wolves are trotting, sleeping and howling in an undisclosed secure location in the U.S., according to the company that aims to bring ...

Two marsupial species thought long extinct, until now known only from fossils, were found alive in New Guinea through a collaboration of scientists, indigenous communities and citizen scientists.

Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to digest a meal and poop just once a week. Their closest living relatives are ...

If there are two things you picture when you hear the word “kangaroo,” chances are it’s either a mama with a joey in her pouch or their propensity to hop across the Outback. It’s daunting enough that ...

Colossal Biosciences made a record-breaking 20 edits across 14 genes in gray wolf cells by adding extinct dire wolf DNA. This was the first time ancient DNA has been used to bioengineer an extinct ...

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big. Most of us are familiar sloths, the ...