Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Poor eyesight (myopia) is associated with higher IQ.
232
All 13 minerals necessary for human life can be found in alcohol beverages.
282
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Your fingernails grow faster in summer.
744