Hot water can freeze faster than cold water.
181
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
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
The sun is 330,330 times larger than the earth.
75