All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
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 approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
The biggest burger in Britain, dubbed the 'Apocalypse Burger', is a mammoth 25,000 calories, weighs 11kg (25lb) and contains £150 (around $233 USD) worth of ingredients.
5
In Tunisia, you can book an overnight stay in Luke Skywalker’s boyhood home for only $10.
13
In 1916, a US amendment was proposed to put all acts of war to a national vote. If you voted yes you would have to register as a volunteer for service in the United States Army.
5
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4