Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. If you were to travel more than 120 million years back in time to ...

Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species.

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

While it is always a shame to see more animals go extinct, the report did include some good news. The IUCN noted that the ...