Autogyro – also known as gyroplane, gyrocopter, or rotaplane, is a type of rotorcraft which uses an unpowered rotor in autorotation to develop lift, and an engine-powered propeller, similar to that of a fixed-wing aircraft, to provide thrust. Toast – According to various apocryphal stories, the custom of touching glasses evolved from concerns about poisoning. By one account, clinking glasses… Read more →