The upcoming U.S. Open has professional golfers and spectators looking forward to getting on the green. But the grass's condition, regardless of a player's skill, can drastically skew the chances of a winning putt. Now, scientists can slow the roll of a golf ball on a lightning-fast, dry course and speed it up on a sluggish, wet course thanks to a coating that soaks up water molecules without interfering with the ball's aerodynamics. ...read more read less