The Prince Charle Cinema in London has volunteer "ninjas" that hush obnoxious moviegoers.
22
There is a sport called Banzai Skydiving. You throw the parachute out of the airplane first and then jump after it.
17
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22