Indoor pollution is 10 times more toxic than outdoor pollution.
62
The sun is 330,330 times larger than the earth.
75
One cubic foot of gold weighs more than 1,200 pounds!
78
One 75-watt bulb gives more light than three 25-watt bulbs.
57
German chemists made a replica of a trophy the size of one molecule.
68
Iron weighs more after it rusts.
68
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20