One cubic foot of gold weighs more than 1,200 pounds!
78
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
4.5 pounds of sunlight strike the Earth each day.
27
Sound travels fifteen times faster through steel than through air.
134
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Most dust particles in your house come from dead skin.
48
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A 'jiffy' is an actual unit of time for 1/100th of a second!
66