Geoengineering might not be so ludicrous an idea — if we gave Earth the right dose

Solar geoengineering is widely viewed as risky business. 

The somewhat sci-fi concept — to use blimps, planes, or other means to load Earth's atmosphere with particles or droplets that reflect sunlight and cool the planet — has crept into the mainstream conversation as a means of reversing relentless climate change, should our efforts to slash carbon emissions fail or sputter. But geoengineering schemes come with a slew of hazards. A number of studies have cited the ill consequences of messing with Earth's sun intake, including big falls in crop production, the likelihood of unforeseen adverse side effects and critically, a weakened water cycle that could trigger drops in precipitation and widespread drought. Read more...

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