This ancient Roman building technique could help cut carbon emissions

New research suggests that an ancient manufacturing technique can create self-healing concrete that naturally fills in cracks.

A road or bridge made from modern concrete might only last 50 years. But the massive Pantheon building in Rome, made from unreinforced concrete, has been standing for nearly two millennia. And nearby, some ancient concrete aqueducts still deliver water to the city. What made ancient Roman concrete so much more durable?

Read Full Story