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July 30, 2013 at 6:52 AM
Give trees a chance
It will take about two weeks to pump the amount of carbon-dioxide equivalent to three hours of coal-power emission into a basalt formation. [“A fix for global warming under our feet?”, page one, July 27.]
Can anyone tell me how many acres of trees we could plant in that time instead? Trees have the obvious benefits of emitting oxygen, while providing beauty, habitat, biodiversity, shade, and water purification. The carbon dioxide drifts to them without human help.
That would be too complicated, I guess.
Ellen Peterson, Seattle
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