Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
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
Your brain is 80% water.
525
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists in Germany have developed a candy that doesn't cause cavities.
11