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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Your heart beats over 36 million times a year.

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

The biological process of nitrogen fixation The biological process of nitrogen fixation
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The grand opening of the huge Miraflores lock on the Panama Canal in October, 1914. The locks were b The grand opening of the huge Miraflores lock on the Panama Canal in October, 1914. The locks were b
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Client files are kept in alphabetical order in locked file cabinets. Client files are kept in alphabetical order in locked file cabinets.
In a metallurgical process the mineral pyrite, FeS2, is roasted in air: FeS2 + O2 Fe2O3 + ... In a metallurgical process the mineral pyrite, FeS2, is roasted in air: FeS2 + O2 Fe2O3 + ...
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