Your brain is 80% water.
525
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Research indicates that plants grow healthier when they are stroked.
173
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
One cubic foot of gold weighs more than 1,200 pounds!
78
A cubic yard of air weighs about 2 pounds at sea level.
31
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