This starts as a heartwarming story and ends as one of the most unsettling science facts on this list. Apparently, a hitchhiking robot that relied on the kindness of strangers to travel the world made it successfully across Canada, Germany, and the Netherlands, before it was found with its head and arms ripped off, just two weeks into its first American tour. It leaves us with so many unanswered questions. Who ripped his arms and head off, and why? Maybe they did it intentionally. It’s possible it was a bear or a wild animal, but then again, it was probably a human. The robot was originally built in Canada, and it’s only purpose was to show the world just how kind humans are. What sad irony.