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Enough Concrete?

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profIJM

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Jan 11, 2016, 10:27:14 PM1/11/16
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"Pervasive since World War II, concrete is now the world’s primary
building material. The amount produced in the last 20 years is enough to
cover each square foot of the planet with three ounces of concrete."

http://www.nytimes.com/interactive/2016/01/11/science/anthropocene-epoch-definition.html?smid=tw-nytimesscience

Daiyu Hurst

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Jun 1, 2017, 11:33:26 AM6/1/17
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Concrete heretic?
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