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
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Scientists in Germany have developed a candy that doesn't cause cavities.
11