The modern trampoline was invented by George Nissen, a competitive diver and All-American gymnast at the University of Iowa. He devised and built his first trampoline in 1937, while he was in college, inspired by watching circus aerialists dropping into nets and bouncing back up after their routines. A showman himself, Nissen was known to perform trampoline tricks well into his 60s and he was on hand in Sydney in 2000 when trampoline became an official Olympic gymnastics event.

Kriss Kross, Van Halen and The Pointer Sisters all had hit songs with what title?

A) "Bounce"

B) "Flip"

C) "Jump"

D) "Trampoline"

Previous answer: In his diaries, Marco Polo wrote that he'd seen a unicorn, but it was a two-horned Sumatran rhino.

TRIVIA FANS: Leslie Elman is the author of "Weird But True: 200 Astounding, Outrageous and Totally Off the Wall Facts." Contact her at [email protected].