There are 20 feet of blood vessels in each square inch of human skin.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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The horizontal fraction bar was introduced by the Arabs.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Measurements of solar cycle variation during the last 30 years
A complete cranium of Au. Afarensis from Hadar, Ethiopia, shows a prognathic face and a small brainc
Review of Health and Illness over the Adult Years
The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007).
An overlapping record extends back thousands of years of tree ring width