When it comes to carbon emissions, there’s a major culprit you might not have heard about: cement. The production of cement emits almost as much carbon dioxide as cars do - but Brimstone CEO and co-founder Cody Finke says they’ve found a way to change that.

This week on How I Built This Lab, Cody explains where all that carbon dioxide is coming from, and how swapping out a key ingredient in the production of cement could take it from carbon-intensive … to carbon-negative.

This episode was produced by Alex Cheng with music by Ramtin Arablouei. 

It was edited by John Isabella with research help from J.C. Howard. Our audio engineer was Patrick Murray. 

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