Boston Dynamics' scary robot videos: Are they for real?

If you've ever watched a YouTube video of a Boston Dynamics robot, you probably remember it. But you may not know what the videos leave out. Millions of people have watched the humanoid Atlas jogging through a field, or the intimidating, 6.5-foot-tall Handle zip back and forth swiftly (and ominously) on wheeled legs. Then there's the dog-like SpotMini dexterously opening a door -- a machine so unsettling it inspired a nightmarish episode of the TV show "Black Mirror" last year. All of these robots are real, but the videos can sometimes be misleading.