The Grantham Foundation

Grantham Foundation seeks to protect and improve the health of global environmental issues and supports individuals and organizations. It also supports communication and collaboration in environmental protection, with an emphasis on climate change. The foundation focuses on communications to enable the general public to understand that climate change represents the world’s primary environmental threat today and that mitigating and adapting to a changing climate will lead to a more sustainable and prosperous future. Grantham Foundation was founded in 1997 by Jeremy and Hannelore Grantham and is based in Boston, Massachusetts, USA.

Marc Von Keitz Ph.D

Director

Sam Lefkofsky

Analyst

Ramsay Ravenel

President and CIO

Caroline de Bossart

Director of Climate Investing

Past deals in Natural Resources

Renewable Metals

Seed Round in 2024
Renewable Metals process recovers nearly all of the lithium, nickel, cobalt, copper, and manganese in batteries without causing additional waste.

Travertine

Venture Round in 2024
Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.

Arca Climate Technologies

Grant in 2023
Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.

Renewable Metals

Seed Round in 2023
Renewable Metals process recovers nearly all of the lithium, nickel, cobalt, copper, and manganese in batteries without causing additional waste.

Eden

Seed Round in 2023
Eden is a leader in sustainable natural resource recovery. They break rocks with electricity to maximize subsurface permeability. Eden believes that a more sustainable approach to natural resource recovery is critical to creating a carbon-neutral future. By using high-voltage electricity and proprietary modeling and reservoir characterization techniques, they can achieve precise fracture permeability enhancement, while preventing the high-water consumption and environmental risks associated with traditional hydraulic fracturing operations. With backing from public and private institutions, Eden’s next-generation rock permeability enhancement technology is being demonstrated in multiple geologies across the world. They are working with industry leaders in geothermal energy, geologic hydrogen, carbon storage, and mining to redefine how we recover Earth’s natural resources. To learn more about Eden and their groundbreaking technology, visit edengeopower.com

Arca Climate Technologies

Pre Seed Round in 2023
Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.

Carboniferous

Seed Round in 2023
Carboniferous develops anoxic biological carbon technology aimed at sequestering carbon from excess terrestrial biomass. The company's approach accelerates natural climate recovery by transporting excess biomass to marine basins where it can be stored in anoxic zones. This process helps eliminate decomposition, effectively capturing and storing embodied carbon dioxide. By leveraging existing supply chains, Carboniferous facilitates the movement of biomass, contributing to enhanced carbon management and climate mitigation efforts.

Canopy Farm Management

Seed Round in 2023
Canopy Farm Management is an agriculture-based company that provides tree planting and management services to farmers and landowners.

Travertine

Seed Round in 2022
Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.

Heirloom

Series A in 2022
Heirloom specializes in direct air capture technology aimed at enhancing the natural absorption of carbon dioxide from the atmosphere. The company's innovative system accelerates the ability of limestone to capture CO2, allowing for its permanent storage underground. By operating on renewable energy, Heirloom's technology promotes carbon capture and utilization at a large scale, with the goal of removing significant amounts of atmospheric CO2. This approach not only minimizes secondary impacts but also supports clients in restoring the atmosphere through natural processes.

Arca Climate Technologies

Pre Seed Round in 2021
Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.
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