It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65