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
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
In Japan, watermelons are grown into the shape of a square so they are easier to stack and transport.
108
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Lentil As Anything, a successful Australian restaurant, allows its customers to pay whatever price they feel like paying for the food.
10