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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Blood is approximately twice as thick as water because of the cells and other components found in it.