NEW YORK (AP) Roger Federer already has dropped two more sets at the U.S. Open than he did during his entire two weeks en route to the title at Wimbledon. Worried about a recent back problem that kept ...
About 20 years ago, a neuroscientist named David Eagleman strapped a bunch of students into harnesses, hoisted them to the top of an imposing metal tower, and then, without warning, dropped them 150 ...