In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Levels of Prevention
A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Freedom House is a nonprofit institution that uses several different factors to rank countries based
Some playgrounds near streets with heavy traffic may still have high levels of lead from gasoline ...