In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Pumice is the only rock that floats on water.
14
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
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 zero gravity, a candle's flame is round and blue.
16
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21