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Roman concrete was a lot greener than the stuff we make today

by LiveModern Webmaster last modified Oct 03, 2013 01:00 AM
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by Lloyd Alter last modified Oct 02, 2013

It was stronger, more durable and had a lower carbon footprint.




 

 

It was stronger, more durable and had a lower carbon footprint.

 

 

 
 
 

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