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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The FDA recognizes 118 routes of administration.
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.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.