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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.