Scientists Want to Dim the Sun to 'Save Us' from Climate Change - What Could Possibly Go Wrong?

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Scientists want to spread dust in the upper atmosphere to see if it will stop climate change. 
The idea is to dump calcium carbonate, basically chalk dust, into the stratosphere to block some of the sun's rays with the hope of halting the climate from warming.  
It's called Stratospheric Aerosol Injection or SAI.
The media calls it Bill Gates' idea, but Gates is only one of many people funding the research and it isn't his idea, it's Harvard's.
The test launch for the project next month in Sweden was canceled after people complained.  But there's likely to be another test in the future because some scientists think this could work, while others say it's a very bad idea. 

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