Evolution may tell us why living things—including humans—age at such diverse rates
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As hard as you might try, it's not easy to keep folks from finding out that you're color-blind
From light therapy to melatonin, research into our bodies' daily rhythms has led to promising treatments for weary travelers
Our cells take trillions of 'hits' each day from toxins both natural and man-made, but hardworking enzymes repair the damage
Review of 'Doc: Then and Now with a Montana Physician'
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In 1940 the hard-driving Harvard biochemist Edwin Cohn broke plasma down into its different proteins and saved millions of soldiers' lives
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