biochar
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Kevin Gibbs
Kevin Gibbs is co-founder and CEO of Terraton, a San Francisco climate-tech startup building a 'business-in-a-box' franchise model for biochar carbon removal. Before climate, he built two pieces of internet plumbing most people use without knowing his name: Google Suggest (search autocomplete) and Google App Engine. He went on to co-found Quip with Bret Taylor, sold it to Salesforce in 2016 for roughly $750M, and ran it to north of $100M ARR. Terraton raised an $11.5M seed in August 2025 led by Lowercarbon and Gigascale.
Andrew Jones
Andrew Jones is the co-founder and CEO of Carba, a Minneapolis-based carbon-removal startup that turns waste biomass into a durable, charcoal-like biocarbon and buries it to lock away CO2 for more than 1,000 years. A chemical engineer with a PhD from UC Berkeley, Jones invented Carba's patented low-energy pyrolysis and storage process and describes the work as 'reversing the coal mining process.' He previously founded and exited Activated Research Company, and has steered Carba from a 2021 lab idea to a working molten-salt reactor at a Burnsville landfill, a multi-year carbon-credit deal with Microsoft, and a goal of removing a gigaton of CO2 a year.
Kurt Tsuo
Kurt Tsuo is the Chief Business Officer of Varaha, a Gurugram-based carbon removal company building high-integrity credits with smallholder farmers across Asia and Africa. A Harvard-trained economist who spent seven years in agriculture before it was a climate headline, he has built business lines at the Gates Foundation, Farmer's Business Network, ProducePay, and Breakthrough Energy, and co-founded the carbon storage startup Graphyte. His through-line is unglamorous and stubborn: make the economics of fixing carbon work for the people who actually grow food.
Jason Aramburu
Jason Aramburu is the cofounder and CEO of Applied Carbon, a Houston-based climate tech company building the world's first mobile, in-field biochar production machines that convert agricultural crop waste into permanent carbon storage - and improved soil - in a single pass. A Princeton-trained ecologist who first encountered biochar during field research in Panama, Aramburu has spent two decades building at the intersection of soil science, robotics, and carbon markets. Before Applied Carbon, he founded re:char (smallholder biochar in Kenya, backed by Gates Foundation) and Edyn (smart irrigation, Y Combinator W14), then invested in AI and energy startups at Baidu Ventures and Saudi Aramco Energy Ventures before returning to his original mission. Applied Carbon raised a $21.5M Series A in July 2024, backed by Microsoft Climate Innovation Fund, Congruent Ventures, and the Grantham Foundation, and won the $500,000 Wilkes Climate Launch Prize in September 2024.
Peter Reinhardt
Peter Reinhardt is CEO and co-founder of Charm Industrial, a San Francisco-based climate tech company that converts agricultural and forest biomass residues into bio-oil and permanently sequesters it underground - effectively putting carbon back where it came from. Before pivoting to saving the planet, he co-founded Segment, the customer data infrastructure platform, and scaled it from a MIT dorm-room idea to a $3.2 billion acquisition by Twilio in 2020. Now he runs Charm with a mission to return atmospheric CO2 to pre-industrial levels of 280 ppm, counting Stripe, Microsoft, JPMorgan Chase, and Meta among customers.