Or, how not to ruin a party By Reilly Capps Here's Neil DeGrasse Tyson on how evidence for UFOs is so weak. A funny, passionate, easy-to-understand rant that will help you shoot down all those visitation stories your friends tell you.  (Read note below after viewing.) Note: this kind of thing has serious buzzkill potential. Water cooler discussions and parties tend to roll when we all nod our heads at inane/insane theories from boring/tipsy people about how they saw a UFO. So be ...