How Bill Gates-funded solar geoengineering could help stop global warming

As fires in the Amazon rainforest prompt renewed global outcry over climate change, Bill Gates is backing the first high-altitude experiment of one radical approach to help. It's called solar geoengineering, and it would create a massive chemical cloud around the whole planet, cooling the surface. It could eradicate blue sky and cause massive shifts in weather patterns that could cause famine and drought. It's also cheap, and the technology is not far off today.
Sat, Sep 7 20199:29 AM EDT