One third of the electricity produced on earth is used to power electric light bulbs!
75
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Cold water weighs more than hot water.
93
Hot water can freeze faster than cold water.
181
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
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
4.5 pounds of sunlight strike the Earth each day.
27
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108