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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The longest a person has survived after a heart transplant is 24 years.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.