4.5 pounds of sunlight strike the Earth each day.
27
The only letter not appearing on the Periodic Table is the letter "J".
180
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Indoor pollution is 10 times more toxic than outdoor pollution.
62
