Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
You burn more calories sleeping than you do watching television.
348
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
Only humans shed emotional tears.
331
The chills you sometimes feel when listening to music is called "musical frisson."
18
Women blink nearly twice as much as men.
152
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423