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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.