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In 1864, the first barbiturate (barbituric acid) was synthesized.
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.