If the human eye was a digital camera, it would have 576 megapixels.
25
Coins usually survive in circulation for about 30 years.
66
Speed dating was invented by a Rabbi in 1999.
45
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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
You share your birthday with at least 9 million other people in the world.
205
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20