Sound travels about 4 times faster in water than in air.
408
Balsa wood is classified as a hard wood!
41
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The sun is 330,330 times larger than the earth.
75
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
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One third of the electricity produced on earth is used to power electric light bulbs!
75