An insane Harvard project in Sweden, funded by Bill Gates, the project stoked fierce opposition from eco groups.

Proposed by researchers at Harvard University, the Stratospheric Controlled Perturbation Experiment, or SCoPEx, ultimately planned to release a cloud of calcium carbonate – more commonly known as chalk dust – into the atmosphere from a high-altitude balloon over the skies of Sweden to study its effects on sunlight reaching Earth. The project proved too controversial, however, and the Swedish Space Corporation (SSC) cancelled the test flight set for June of a few years back. The alterations in weather patterns could have conceivably affected agricultural production in the Netherlands, whixpch was probably its intended goal!? (The Netherlands is the Number One agricultural exporter in Europe; Number Two globally!)

The overal gist of this was wonderfully explained in an 8–minute Kwak Brothers video on Bill Gates:

https://youtu.be/Zx7sQvDiJH0