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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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.