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The average adult has about 21 square feet of skin.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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.
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).