Farmers and gardeners have traditionally improved soil quality with lime and crushed stone dust. Research shows enhanced rock weathering (ERW) could significantly remove CO2, potentially meeting U.S. carbon reduction goals by capturing 5%-10% of emissions. In India, ERW might fulfill 40% of Paris Agreement commitments. ERW captures CO2 as water dissolves rock like basalt, helping align agricultural practices with climate policy. The 2024 report estimates a need for 7-9 billion metric tons of annual CO2 removal to achieve climate targets, highlighting the limitations of current methods that mainly involve reforestation.
Enhanced rock weathering (ERW) utilizes ground rock such as basalt to capture CO2 from the atmosphere. This process could significantly aid in meeting climate goals.
The University of Sheffield's 2020 study indicates that layering soil with calcium- and magnesium-rich ground rock could account for 5% to 10% of the U.S. carbon reduction goals.
In India, implementing ERW can potentially sequester up to 40% of the obligations under the Paris Agreement, showcasing its massive potential for carbon capture.
For effective carbon removal to align with the 1.5°C Paris Agreement target, an estimated 7 to 9 billion metric tons of CO2 must be removed annually.
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