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    • I'm certainly no expert on the subject but I am very wary of geoengineering solutions, though carbon sequestration might not be risky if affordable. What scares the daylights out of me are proposals to unleash aerosols or other forms of modifying the atmosphere. It seems like every year we learn new aspects to the immensely complex interactions that affect the climate. The models keep being revised, but I'm not sure our confidence in them is growing. OTOH, we do know with high assurance things we can do to reduce greenhouse gas emissions. Isn't it better to do those now?