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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.