7 Things You Didn’t Know About Plastic (and Recycling)
National Geographicblog.nationalgeographic.org
Saved by Mike Tannenbaum
7 Things You Didn’t Know About Plastic (and Recycling)
Saved by Mike Tannenbaum
The durability of concrete structures varies widely: while it is impossible to offer an average longevity figure, many will deteriorate badly after just two or three decades while others will do well for 60–100 years. This means that during the 21st century we will face unprecedented burdens of concrete deterioration, renewal, and removal (with, ob
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