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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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Red squirrel at a feeding tray in the Lake District, England.
The flukes of a sperm whale as it dives into the Gulf of Mexico
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670