Spoilers ahead if you haven't watched Prometheus, the 2012 film and previous entry in the Alien franchise. In this fascinating clip, Dr. Shaw and the android David are drifting aboard the Engineer ship. Shaw repairs David, who then sets a course for the Engineer homeworld. Little by little, the mysterious Engineers are beginning to come out of the shadows. Alien: Covenant comes to theaters May 19, 2017.
Eat, sleep, hang out in trees and move really slow — the life of a sloth doesn't seem too bad. But that cute face and languid movements aren't an accident. Living in trees is a great way to avoid predators, but with a diet almost exclusively consisting of leaves, sloths don't get a lot of energy from their food. Taking their time and moving at a leisurely pace is one of a few ways they've adapted to their diet. TED looks at the giant ancestors of sloths and the much smaller modern species we know today.