“It sounds like an idea plucked from science fiction, but the reality is that trees and plants already do it, breathing carbon dioxide and then depositing it via roots and decay into the soil. That’s why consumers and companies often ‘offset’ their carbon emissions by planting carbon-sucking trees elsewhere in the world.” WaPo: The new plan to remove a trillion tons of carbon dioxide from the atmosphere: Bury it. (My personal carbon offset efforts are similar to this model. I take a bong hit. But I never exhale.)