One cubic foot of gold weighs more than 1,200 pounds!
78
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The average home creates more pollution than does the average car.
33
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Your brain is 80% water.
525
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6