Pumice is the only rock that floats on water.
14
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
The bark of an older redwood tree is fireproof.
65
German chemists made a replica of a trophy the size of one molecule.
68
The earth is approx. 6,588,000,000,000,000,000 tons.
175