If left alone, 70% of birthmarks gradually fade away.
193
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15
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
Coins usually survive in circulation for about 30 years.
66
In the White House, there are 13,092 knives, forks and spoons!
51
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
If you counted 24 hours a day, it would take 31,688 years to reach one trillion!
44
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240