A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Out of all the senses, smell is most closely linked to memory.
146
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Scientists in Germany have developed a candy that doesn't cause cavities.
11
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
Hot water can freeze faster than cold water.
181
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9