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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Your heart beats over 36 million times a year.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
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The average office desk has 400 times more bacteria on it than a toilet.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.