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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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The average office desk has 400 times more bacteria on it than a toilet.