The average home creates more pollution than does the average car.
33
Pumice is the only rock that floats on water.
14
Pure water (H2O) does not conduct electricity on its own.
46
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
According to studies, men change their minds two to three times more often than women.
72
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
One 75-watt bulb gives more light than three 25-watt bulbs.
57