Aristos is a Newsweek science and health reporter with the London, U.K., bureau. He is particularly focused on archaeology and paleontology, although he has covered a wide variety of topics ranging ...

Celebrate International Sloth Day with 7 incredible facts about sloths (from camouflage fur to fart-powered floats) that ...

Every now and again, you come across a video online that stops you in your tracks, not because it’s flashy or funny, but because it tugs at your heartstrings. That’s exactly what happens when you meet ...

A sloth scientist, her tree-climbing BFF, and their dog work to save Costa Rica’s sloth populations in groundbreaking ways, all while capturing rarely seen wild sloth behaviors and reimagining what it ...