To time how fast a sprinter runs, you just need a stopwatch. To time how fast magma moves, you need to know a little bit ...

Sloths are known for how slowly they move, but their slow speed isn't just a funny quality they have— it's part of why their species has survived for 64 million years. Following is the text of ...

Sloth is a sin and busy-ness a badge of honour – but is our need for speed really the best strategy? Zoologist and broadcaster Lucy Cooke, holding a baby sloth I started my investigation with a ...

A family of sloths take their food truck to the big city in this animated movie directed by Ricard Cussó and Tania Vincent.