In 2025, US scientists poured 16,500 gallons of lye and bright pink dye into the Gulf of Maine, the first federally approved attempt to reverse the ocean's rising acidity
• In August 2025, US scientists conducted the first federally approved ocean alkalinity enhancement experiment by releasing 16,500 gallons of sodium hydroxide (lye) into the Gulf of Maine. • The operation utilized a bright pink dye to track the spread of the lye plume across the water's surface. • This initiative aims to reverse rising ocean acidity and increase the ocean's capacity to absorb CO2 from the atmosphere to combat climate change.
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