The familiar sounds of your heart are made by the heart's valves as they open and close.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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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.
Top down view of Olympus Mons, the highest known mountain in the solar system
What are the highest virtues?
Fats, Oils, and Other Lipids
Sunflower seeds "حب الشمس"
Locations of tissues in the stem of a sunflower (Helianthus).