The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
4.5 pounds of sunlight strike the Earth each day.
27