Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Sound at the right vibration can bore holes through a solid object.
134
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One barrel of petroleum holds 42 gallons.
20