Aluminum used to be more valuable than gold!
84
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
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Scientists aren't sure what color dinosaurs were.
312
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
One cubic foot of gold weighs more than 1,200 pounds!
78