No, you didn’t misread the headline. From The Atlantic:
Just a decade ago, every one of these schemes was considered outlandish. Some still seem that way. But what sounded crankish only 10 years ago is now becoming mainstream thinking.
By now, even staunch environmentalists and eminent scientists with long records of climate-change concern are discussing geo-engineering openly.
Spread powdered iron over the surface of the ocean, and in very little time a massive bloom of plankton will grow, [oceanographer John Martin] predicted. “Give me half a tanker of iron,” Martin said, “and I’ll give you the next Ice Age.”
Another scheme involves spewing sulphur dioxide into the atmosphere to scatter sunlight; still another proposes pumping carbon underground or into the oceans. [Coal mining in reverse?] All of them pose far greater risk to you and me than a negligible risk of insignificant temperature increase, and by golly, they’re going to execute one or perhaps several of them with some software mogul’s grant money!
The scariest thing about geo-engineering, as it happens, is also the thing that makes it such a game-changer in the global-warming debate: it’s incredibly cheap. Many scientists, in fact, prefer not to mention just how cheap it is. Nearly everyone I spoke to agreed that the worst-case scenario would be the rise of what David Victor, a Stanford law professor, calls a “Greenfinger”—a rich madman, as obsessed with the environment as James Bond’s nemesis Auric Goldfinger was with gold. There are now 38 people in the world with $10 billion or more in private assets, according to the latest Forbes list; theoretically, one of these people could reverse climate change all alone. “I don’t think we really want to empower the Richard Bransons of the world to try solutions like this,” says Jay Michaelson, an environmental-law expert, who predicted many of these debates 10 years ago.
Enjoy your next sandwich, folks.