The force of a suction cup is calculated using F=AP.
15
In zero gravity, a candle's flame is round and blue.
16
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The average temperature at 40,000 feet above sea level is -60 F.
56
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310