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
'Second Street' is the most common street name in the U.S.; 'First Street' is the sixth! "
41
Coins usually survive in circulation for about 30 years.
66
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
If the human eye was a digital camera, it would have 576 megapixels.
25
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15
You can start a fire with ice.
367
There are 2,500,000 rivets in the Eiffel Tower.
98