True or false: Sloths are lazy. Answer: False! True or false: Sloths are mysterious. Answer: True! Scientists are only beginning to discover how sloths live in the wild. Sloths spend most of their lives in trees, and until recently scientists didn’t know very much about them. But Dr. Rebecca Cliffe was determined to discover their secrets. To find out more, she fitted sloths with special backpacks containing a device to track their activity. And she’s helped create sloth crossings and plant trees to ensure the sloths aren’t trapped in shrinking territories.