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
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Nylon is made from coal and petroleum.
42
One ragweed plant can release as many as one billion grains of pollen!
51
A cesium atom in an atomic clock beats over nine billion times a second.
43
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Indoor pollution is 10 times more toxic than outdoor pollution.
62