A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Most dust particles in your house come from dead skin.
48
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
For every gallon of sea water, you get more than a quarter pound of salt.
45
The average home creates more pollution than does the average car.
33
Pure water (H2O) does not conduct electricity on its own.
46
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
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