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Thyroid conditions may make getting pregnant impossible.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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