The modern world is built on concrete. It holds together driveways, bridges and the buildings in which more than 70 percent of the world’s population makes their home.
But the material is also a climate killer. Its production is responsible for 8 percent of global carbon dioxide emissions — more than the entirety of India’s CO2 emissions.
Remedies have been few and far between, but a California company named C-Crete Technologies says it has developed America’s first carbon-neutral and commercially available ready-mix concrete.
Its trick is twofold.