Play-Doh was first manufactured as a wallpaper cleaner.
122
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
An iceberg contains more heat than a lit match.
73
It's impossible to sink in the Dead Sea without equipment!
72
‘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
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
479
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140