The earth is approx. 6,588,000,000,000,000,000 tons.
175
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Sound travels fifteen times faster through steel than through air.
134
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Each day, up to 150 species of life become extinct.
-23
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Iron weighs more after it rusts.
16