In this episode, we tackle three carbon removal projects of varying scale, business models, and technical challenges.Biomass pyrolysis via Charm IndustrialAn electrochemical process via TravertineMineralization via 44.01We cover these companies through the lens of their founders – Peter Reinhardt (CEO of Charm Industrial), Laura Lammers (CEO of Travertine), and Karan Khimji (COO of 44.01) – who share the fascinating stories of how they stumbled into this industry, how their processes work, whether they can economically scale, and ultimately why each of them is dedicating their time and energy to this field.This episode also closes out our carbon removal mini series, where we’ve seen a unique convergence of attention, capital, policy, and creativity being applied. With that combination, it's rare that humans don't surprise one another in progress. Resources: Charm Industrial:Charm Industrial’s website: https://charmindustrial.com/Charm Industrial on Twitter: https://twitter.com/CharmIndustrialPeter on Twitter:  https://twitter.com/reinpkTravertine:Travertine’s website: https://www.travertinetech.com/Laura on Twitter: https://twitter.com/limestonedr44.01:44.01’s website: https://4401.earth/44.01 on Twitter: https://twitter.com/4401earthKaran on Twitter: https://twitter.com/kdkhimji Stay Updated: Find us on Twitter: https://twitter.com/a16zFind us on LinkedIn: https://www.linkedin.com/company/a16zSubscribe on your favorite podcast app: https://a16z.simplecast.com/Follow our host: https://twitter.com/stephsmithioPlease note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. For more details please see a16z.com/disclosures.