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People Trivia

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A human can see a candle flame from 50 kilometers on a clear, dark night.

A human can taste one gram of salt in 500 liters of water (0.0001M).

A human fetus acquires fingerprints at the age of three months.

A loss of 20 percent of the body's water would result in certain and painful death. Ordinarily the body cannot go more than a week and a half without water; the longest recorded time anyone has gone without water is eleven days.

A man's voice is deeper than a woman's because male vocal cords are longer. At 1.25 inches (30 millimeters) long, a man's vocal cords vibrate slower than a woman's 0.75-inch (20 millimeter) long cords, giving him the deeper voice.

A man's testicles produce 72 million sperm a day--enough in three months to populate the entire world.

A mythomaniac is a compulsive liar.

A newborn baby breathes 40 times a minute.

A newborn baby's head accounts for about one-quarter of its entire weight.

A newly formed nerve cell is called a neuroblast.

A normal person has two true vocal chords. We also have two false vocal chords which have no direct role in producing sound.

A person breathes almost 7 quarts of air every minute.

A person living to 75 years of age will have slept nearly 23 years of his or her life--or about 220,000 hours.

A person living to age 80 will have taken more than 200 million breaths, moving nearly 600 tons of air in the process.

A person who is "scoptophobic" has an intense fear of being seen.

A person would have to play Ping-Pong for 12 hours to burn enough calories to lose one pound.

A person's nose and ears continue to grow throughout his or her life.

A recent study found that 75 percent of headache patients felt relief when they rubbed capsaicin (the component that makes chile peppers hot) on their nose.

A recent U.S. study purports that there are fewer births 9 months after a heat wave. The study found that an increase of 12 Celsius (about 21.6 F) in summer temperatures reduces births the following spring by up to 6 percent. Researchers at Kinsey Institute for Sex Research at Indiana University concluded that high temperatures could reduce people's sense of well-being, which could result in a reduction in sexual interest. Another study found lower sperm counts and higher rates of miscarriage during hot weather.

A red blood cell in the lungs has to travel less than 0.00004 inches to pick up oxygen from a capillary.

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