Some funnies for today...
More cards at the New Humanist
Showing posts with label humor. Show all posts
Showing posts with label humor. Show all posts
Wednesday, November 19, 2008
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For a better concrete, mix sand with bacteria and urea? - Concrete is the second most consumed substance on Earth, after water. It’s primary ingredient, cement, accounts for about 5 percent of the world’s carbo...11 years ago
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