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
The only letter not appearing on the Periodic Table is the letter "J".
180
Research indicates that plants grow healthier when they are stroked.
173
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Pumice is the only rock that floats on water.
14
One barrel of petroleum holds 42 gallons.
20
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Iron weighs more after it rusts.
68