Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists aren't sure what color dinosaurs were.
312
One cubic foot of gold weighs more than 1,200 pounds!
78
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
One barrel of petroleum holds 42 gallons.
20
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The only letter not appearing on the Periodic Table is the letter "J".
180