Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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The human body produces and destroys 15 million blood cells every second.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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The average adult has about 21 square feet of skin.
Adult male tortoise, South Africa
Projected Ethnic Changes in U.S. Population to 2050
North Pacific mT air
North American Climates
Chimpanzee (Pan troglodytes), Gombe Stream National Park, Tanzania, Africa.
The frequency distribution of the allele in Africa, Southern Europe, the Middle East