Leonardo da Vinci could write with one hand and draw with the other at the same time.
56
There's a regenerative candle that creates a new candle as it melts.
20
If you place a ripe banana next to a green tomato, the tomato will ripen due to the ethylene gas produced by the banana.
16
The Simpsons are responsible for popularizing the word 'meh'.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
There is a superhero supply store in Brooklyn with a cape fitting room that has a wind tunnel. They also sell oxygen gum, bottled chaos and have an invisibility testing center.
18
Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22