4.5 pounds of sunlight strike the Earth each day.
27
Each day, up to 150 species of life become extinct.
-23
Diamonds can be shattered with a hammer.
-104
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A cesium atom in an atomic clock beats over nine billion times a second.
43
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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