Tag Archives: oxygen

Changing Colors

Fall is here. We all learned about photosynthesis in school, but here is a simple refresher as to how it works and why the leaves change color. “Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into oxygen and sugar is called [...]

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A Powers-of-Ten Refreshment

Epicurious recently listed the mojito as one of its favorite summertime beverages.  Consider the ingredients of this Cuban cocktail through a powers-of-ten lens. Fresh lime juice In early 19th century Britain, sailors were required to consume a daily ration of lime juice to prevent scurvy, which is why British Navy men were known as “limeys.”  [...]

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35 (to 50 percent of the cells in blood are red blood cells)

Image from FotoSearch The importance of the red blood cells is emphasized in a report in US News & World Report. “Red blood cells or erythrocytes account for about 35 to 50 percent of the cells in blood. Red blood cells are filled with hemoglobin, which enables them to deliver oxygen to the tissues of [...]

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  • Countdown to Powers of Ten Day

    • 10/10/10 1390 days ago