On average, every dollar bill you touch has over 3,000 different types of bacteria.
8
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
‘Tree shaping’ is the art of growing trees and roots into things like bridges, chairs, “people trees”, ladders, fences, jungle gyms, tunnels, and, theoretically, could even be used to grow homes.
3
Caffeine boosts memory.
405
Barbie's full name is Barbara Millicent Roberts.
78
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240