Production of the cement used in concrete is a major cause of CO2 emissions, so Provencher Roy used an alternative for two bridges in Canada. They were built from concrete that contained recycled ...

The city of Flagstaff, Ariz., is expected to vote on a resolution to spend $74,000 from the city’s Public Works Fund to purchase 5,000 35-gallon bins for glass. The money would be a 50 percent match ...