In 2011, there were 3 known cases around the world of twins coming from different fathers.
30
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
People who ride on roller coasters have a higher chance of having a blood clot in the brain.
121
Historically, sweat has been an active ingredient in perfume and love potions.
309
Parents receive 1 out of every 5 Valentines.
20
If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.
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