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Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

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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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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Changes in Earth's atmospheric carbon dioxide levels over geological time. Changes in Earth's atmospheric carbon dioxide levels over geological time.
Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of
Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada
Emanuel Leutze’s Washington Crossing the Delaware (1851) is riddled with historical inaccuracies, mo Emanuel Leutze’s Washington Crossing the Delaware (1851) is riddled with historical inaccuracies, mo
Rockin' In Time, 9th Edition Rockin' In Time, 9th Edition
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf
Video: Basic rhythm - control centers in medulla oblongata, spirograph and normal tidal cycle

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