A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Pumice is the only rock that floats on water.
14
Diamonds can be shattered with a hammer.
-104
Nylon is made from coal and petroleum.
42
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5