Balsa wood is classified as a hard wood!
41
Aluminum used to be more valuable than gold!
84
One barrel of petroleum holds 42 gallons.
20
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists aren't sure what color dinosaurs were.
312
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18