The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Thyroid conditions may make getting pregnant impossible.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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There are more sensory neurons in the tongue than in any other part of the body.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
Structure of water and ice
Structure of cellulose, the main macromolecule of the primary cell wall
Structure of the trachea, which extends from the larynx above to the main bronchi below.