schwit1 sends this news from Businesweek: “After 2,000 years, a long-lost secret behind the creation of one of the world’s most durable man-made creations ever — Roman concrete — has finally been discovered by an international team of scientists, and it may have a significant impact on how we bu

Via http://tech.slashdot.org/story/13/06/15/1238226/ancient-roman-concrete-is-about-to-revolutionize-modern-architecture

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