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Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.