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
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114
The world’s smallest book, “Teeny Ted from Turnip Town”, is 100×70 micrometers in size and requires a scanning electron microscope to read, as light beams are too large.
6
The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
27
On average, the life span of an American dollar bill is eighteen months.
33
It has been calculated that every 2 minutes, we take more pictures than all of humanity in the 19th century.
13
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4