A cubic yard of air weighs about 2 pounds at sea level.
31
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
One ragweed plant can release as many as one billion grains of pollen!
51
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Most dust particles in your house are made from dead skin!
67
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Pure water (H2O) does not conduct electricity on its own.
46