Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
255
In an average hour, there are over 61,000 Americans airborne over the United States.
24
The full moon causes a tidal wave to roll up the Amazon river once in day and once in night for a period of only three weeks in a year. This results in continuous 4m high wave that can be surfed for up to 13km.
14
Water is actually naturally blue.
48
Pollen never deteriorates. It is one of the few natural substances that lasts indefinitely.
58
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72