NEW VIDEO! The Problem With Concrete (Patreon)

Dear patrons,

Concrete is responsible for 8% of humanity’s carbon emissions because making its key ingredient - cement - chemically releases CO2, and because we burn fossil fuels to make it happen.

Watch it here: https://youtu.be/GSc9hu917OU

We're excited to create this video in partnership with Bill & Melinda Gates! If you want to read their letter about their efforts to make the world a better place, it's here: https://b-gat.es/2GxIwba

Thanks for helping us make videos like this!

Alex