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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
![In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism](https://biology-forums.com/gallery/47/medium_375348_18_08_15_9_36_29_222991202.jpeg)
![Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_42_56_22412771.jpeg)