Terra CO2 cements $124M Series B to slash concrete’s carbon footprint

Concrete has been around for millennia, but Terra CO2 thinks it has a better way to make the ubiquitous building material, and investors appear to agree.

The Golden, Colorado-based startup recently closed a $124.5 million Series B to help bring its low-carbon cement replacement to market.

Cement — the stuff that binds aggregate together to form concrete — weighs heavily on the climate. The CO₂ released by the chemical reaction that makes Portland cement, the most common type of cement, and the fossil fuels that typically power it…