Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The storage capacity of human brain exceeds 4 Terrabytes.
140
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Scientists aren't sure what color dinosaurs were.
312
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
One 75-watt bulb gives more light than three 25-watt bulbs.
57
For every gallon of sea water, you get more than a quarter pound of salt.
45