Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Western European red deer
Greater Flamingo
Adult European beewolf (Philanthus triangulum) feeding on nectar
Apparent and True Orbits of Alpha Centauri.
True-color image of layers of haze in Titan's atmosphere.