For anyone who's had this thought while waiting for a train, what a relief to know it works — a 50-something-year-old man who fell in front of an R train yesterday survived after he dove down into the trough between the tracks.

As part of a new Discovery Channel series physicist Stephen Hawking says that he's convinced aliens are out there, but that we should avoid them because they will probably come to earth and kick our asses like in the movies.