By weight, Bone is five times stronger than steel.
417
The cat brain weighs about 30g.
167
Most elephants weigh less than a blue whale's tongue.
442
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
You burn more calories sleeping than you do watching television.
348
The earth is approx. 6,588,000,000,000,000,000 tons.
175
You burn 26 calories in a one minute kiss.
605