Out of all the senses, smell is most closely linked to memory.
146
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Most dust particles in your house come from dead skin.
48
In zero gravity, a candle's flame is round and blue.
16
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Your brain is 80% water.
525
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39