This concrete can trap CO2 emissions forever

Concrete is the most abundant man-made material on earth. There's a good chance you're standing on it right now, and it's holding up the buildings around you. But concrete has an emissions problem. Its essential ingredient, cement, has a huge carbon footprint.
Read more: http://money.cnn.com/2018/06/12/technology/concrete-carboncure/index.html?source=Snapzu