The earth is approx. 6,588,000,000,000,000,000 tons.
175
Hot water can freeze faster than cold water.
181
Out of all the senses, smell is most closely linked to memory.
146
Aluminum used to be more valuable than gold!
84
In zero gravity, a candle's flame is round and blue.
16
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3