"Gates and other private donors are supporting Harvard University’s Solar Geoengineering Research Program, which had planned to launch a new study based in Sweden in June researching the efficacy of blocking sunlight from reaching Earth’s surface. The Stratospheric Controlled Perturbation Experiment (SCoPEx) aimed to see how a tiny amount of aerosol in a trial would influence the immediate surroundings. But now, Harvard says it’s delaying the study to examine the impact on Sweden itself, as well as the indigenous Sami people who live in the region. Geoengineering is the term for technologies that try to alter Earth’s physical qualities on the largest scale possible. One example is cloud seeding, where airplanes flush clouds with particulate matter in order to coalesce into rain. Carbon capture, where emissions are taken and sequestered beneath Earth’s surface, is another major form of geoengineering." https://www.popularmechanics.com/science/a36014979/bill-gates-sun-blocking-experiment-postponed/