Air and Water on Earth

Found at Dan Phiffer's blog, via SciGuy:

How much water and air is there on planet Earth? Not as much as you might think.

The image above shows [left] all the water in the world (including oceans, ice, lakes, rivers, ground water, clouds, etc.); and [right] all the air in the atmosphere gathered into a ball at sea-level density.

Mike Treder

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