Geoengineering Could Cheaply and Quickly Counter Global Warming

(p. B1) Last month, scholars from the physical and social sciences who are interested in climate change gathered in Washington to discuss approaches like cooling the planet by shooting aerosols into the stratosphere or whitening clouds to reflect sunlight back into space, which may prove indispensable to prevent the disastrous consequences of warming.
Aerosols could be loaded into military jets, to be sprayed into the atmosphere at (p. B4) high altitude. Clouds at sea could be made more reflective by spraying them with a fine saline mist, drawn from the ocean.
. . .
. . . , geoengineering needs to be addressed not as science fiction, but as a potential part of the future just a few decades down the road.
“Today it is still a taboo, but it is a taboo that is crumbling,” said David Keith, a noted Harvard physicist who was an organizer of the conclave.
. . .
Geoengineering would be cheap enough that even a middle-income country could deploy it unilaterally. Some scientists have estimated that solar radiation management could cool the earth quickly for as little as $5 billion per year or so.

For the full commentary, see:
Porter, Eduardo. “ECONOMIC SCENE; To Curb Global Warming, Science Fiction May Become Fact.” The New York Times (Weds., APRIL 5, 2017): B1 & B4.
(Note: ellipses added.)
(Note: the online version of the commentary has the date APRIL 4, 2017, and has the title “ECONOMIC SCENE; To Curb Global Warming, Science Fiction May Become Fact.”)

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