Cement production alone currently accounts for about 8 percent of global CO 2 emissions, so considerable effort is going into lowering that number. Efficiency can be increased, and energy sources can ...

Cement production creates nearly as much CO2 as passenger cars, but replacing limestone with basalt could cut emissions by up ...

Ideas to reduce carbon emissions often revolve around renewable power, electric vehicles and energy efficiency. But there's another, less colorful character that's often overlooked: cement.

Scientists are proposing a new way to make cement by replacing limestone with volcanic ...