One barrel of petroleum holds 42 gallons.
20
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
Hot water can freeze faster than cold water.
181
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The average temperature at 40,000 feet above sea level is -60 F.
56
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Scientists aren't sure what color dinosaurs were.
312