A cubic yard of air weighs about 2 pounds at sea level.
31
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
If the chemical sodium is dropped into water it will immediately and violently explode.
67
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Nearly 50% of the world's scientists are assigned to military projects.
71
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79