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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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People about to have surgery must tell their health care providers about all supplements they take.

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Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Cell Cycle Cell Cycle
A missense mutation that causes red blood cells to sickle in sickle-cell anemia. A missense mutation that causes red blood cells to sickle in sickle-cell anemia.
Bacterial colonies, each derived from a single cell Bacterial colonies, each derived from a single c Bacterial colonies, each derived from a single cell Bacterial colonies, each derived from a single c
Cell division protein FtsN Cell division protein FtsN
Color mixtures of reflected pigment—subtractive process Color mixtures of reflected pigment—subtractive process
The Bergeron Process The Bergeron Process
Video: Kidney Stones

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