Your brain is 80% water.
525
Iron weighs more after it rusts.
68
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A cesium atom in an atomic clock beats over nine billion times a second.
43
4.5 pounds of sunlight strike the Earth each day.
27
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The sun is 330,330 times larger than the earth.
75
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101