One ragweed plant can release as many as one billion grains of pollen!
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Sound travels fifteen times faster through steel than through air.
134
German chemists made a replica of a trophy the size of one molecule.
68
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
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
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