In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
One ragweed plant can release as many as one billion grains of pollen!
51
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Most dust particles in your house come from dead skin.
48
Iron weighs more after it rusts.
68
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One 75-watt bulb gives more light than three 25-watt bulbs.
57