Remember the project where Bill Gates wanted to cover the sun to cool the Earth? Well, this summer, the tests will begin. According to The Times, a large balloon will soon be launched in Sweden that will spew out particles of calcium carbonate, which is essentially “chalk dust.”
The Controlled Stratospheric Perturbation Experiment (SCoPEx) wants to prove that the release of this dust into the stratosphere could eventually divert some of the sun's energy and lower the temperatures of our planet.