The earth is approx. 6,588,000,000,000,000,000 tons.
175
Sex burns about 360 calories per hour.
860
By weight, Bone is five times stronger than steel.
417
You burn 26 calories in a one minute kiss.
605
The elephant brain weighs about 6,000g.
274
One human hair can support 3 ounces.
191
The cat brain weighs about 30g.
167