Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Nearly 50% of the world's scientists are assigned to military projects.
71
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5