Geoengineering — the idea of deliberately fiddling with the Earth’s climate to reduce global warming — has long been seen as an insane, preposterous, mad-scientist notion. Surely we’d have to be truly desperate before we ever tried something like blotting out sunlight to cool the planet….right? Right. But that’s why it’s so striking that many scientists now think we should at least consider some of these crazy ideas. This week, an expert panel convened by the National Academy of Sciences released two big reports on “climate intervention” schemes. The first report was harmless enough, looking at ways to suck out some of the heat-trapping carbon-dioxide we’ve put into the atmosphere. Those technologies are quite promising; they’re just expensive and likely limited. Definitely worth researching.

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