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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51