Tag Archives: carbon dioxide

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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Curiosity Rover Lands on Mars

On August 5, 2012, the Curiosity rover landed on the Red Planet in what The New York Times calls “a flawless, triumphant technological tour de force.” It took the rover over eight months to make the 352-million-mile trip (10+08). In a recent video, NASA’s Jet Propulsion Laboratory (JPL) details the final minutes of the rover’s [...]

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6 (.0221415)

Avogadro’s Number is 6.0221415 X 1023 which is also quantified as N A. “Avogadro’s number, N A , is the fundamental physical constant that links the macroscopic physical world of objects that we can see and feel with the submicroscopic, invisible world of atoms. In theory, N A specifies the exact number of atoms in [...]

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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 1387 days ago