Balsa wood is classified as a hard wood!
41
Your brain is 80% water.
525
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
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65