Backed marine cloud brightening research as a regionally targeted geoengineering approach
Gates-linked funding supported research into marine cloud brightening — a geoengineering technique spraying fine sea salt aerosols into low-lying ocean clouds to increase reflectivity and reduce sunlight reaching Earth's surface. Unlike stratospheric aerosol injection, marine cloud brightening operates at lower altitudes and is more locally reversible. Research teams at the University of Washington studied it as a potential regional cooling tool to protect coral reefs from warming-induced bleaching. Gates has argued studying all geoengineering approaches is a moral obligation given the pace of climate change.
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Receives the Lasker-Bloomberg Public Service Award for contributions to global health
Related Accomplishments
March 2025
Breakthrough Energy Ventures Invests in Savor — Butter Made Directly from Carbon
Breakthrough Energy Ventures backed Savor, a startup that produces butter using carbon dioxide and hydrogen — derived from atmospheric carbon and water — without any conventional agriculture, animals, or farmland. Savor's thermochemical process generates saturated fat with an identical molecular profile to dairy butter while using an estimated 99.9 percent less water and zero agricultural land. The product launched at Michelin-starred restaurants in 2025, with supermarket availability targeted for 2027, as part of Gates's broader bet on food-system decarbonisation.
2024
Breakthrough Energy Catalyst Invests $40 Million in Deep Sky Carbon Removal
Breakthrough Energy Catalyst — Gates's industrial decarbonisation investment vehicle — committed $40 million to Deep Sky, a Quebec-based company developing commercial direct air capture facilities across Canada. The investment marked Catalyst's first in the DAC sector. Deep Sky's Alpha facility in Alberta is designed as a testing ground for multiple next-generation carbon removal technologies, with the goal of proving the cost trajectory needed to make DAC viable at planetary scale.
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