We Just Breached the 410 PPM Threshold for CO2

Re:We Just Breached the 410 PPM Threshold for CO2 by semi-extrinsic on Saturday April 22, 2017 @05:36PM (#14174956)

> Not an option.

Actually, it is an option. Either we can take CO2 out of the atmosphere and put it back underground where it came from; or we could start doing climate engineering to increase the reflectivity of Earth (less sunlight in), using water vapor clouds at low altitude or aerosols at high altitude; or we could put up a big shade in space between us and the sun.

Are those expensive and difficult things? Definitely. But all of them are possible.

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Re:We Just Breached the 410 PPM Threshold for CO2 by cardamomo on Saturday April 22, 2017 @05:43PM (#14174992)

I guess I was thinking more literally: the Earth does not have large windows we can use to exchange air with the outside environment. Carbon sequestration doesn't remove CO2 from our "spaceship," though it may help.

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Re:We Just Breached the 410 PPM Threshold for CO2 by mitchty on Saturday April 22, 2017 @07:13PM (#14175420)

Why would you want to completely remove CO2 from the earth and not sequester it? There is a bunch of useful carbon and oxygen in it that you can at least leave for future humans to use if its sequestered.

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