Out of all the senses, smell is most closely linked to memory.
146
Iron weighs more after it rusts.
68
The average home creates more pollution than does the average car.
33
In zero gravity, a candle's flame is round and blue.
16
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists are now able to grow 'beating' heart tissue in a lab!
162
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Diamonds can be shattered with a hammer.
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