The fastest growing nail is on the middle finger.
80% of the brain is water.
Scientists say the higher your I.Q. the more you dream.
The brain is much more active at night than during the day.
The human brain cell can hold 5 times as much information as the Encyclopedia Britannica.
The brain operates on the same amount of power as 10-watt light bulb.
Nerve impulses to and from the brain travel as fast as 170 miles per hour.
Lobsters have blue blood.
Lightning strikes the earth about 6,000 times per minute on this planet.
Less than 7% of the population donates blood.