If the chemical sodium is dropped into water it will immediately and violently explode.
67
Iron weighs more after it rusts.
16
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
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65