Is This for Real?

Simon M. passes this along, saying “If I'd read this on April 1st I'd have thought it was a joke.”  Here's the start of the piece:

Harvard University geoengineer and environmental scientist David Keith has a "plan B" in case of an environmental emergency.

Keith's unusual proposal is this: Force reflective particles into the Earth's upper atmosphere -- the stratosphere -- to reverse global warming.

"One approach is to disperse particulates at high altitude to reduce the effective solar flux entering the atmosphere," Keith and his fellow researchers report in the Nature Climate Change journal and Environmental Research Letters.

I'm guessing Simon would be very surprised to learn that many such schemes have been proposed, generally followed by a round of raspberries from the warmist crowd.  It seems that even if one accepts the notion of runaway global warming, proposing to fix it by engineering a solution is automatically bad – even if said solution is vastly easier and cheaper than the solutions being proposed by the warmists (e.g, carbon taxes, huge reductions in carbonaceous fuel use, etc.).  Several scientists who have proposed engineered global warming fixes have reported being harassed, having their funding threatened (and, in at least one case, actually withdrawn), and so on.  It's Mann's way or the highway, it seems...