Bill Gates Backs Solar Geo-Engineering to Cool Earth, But Risks Include Mass Famine and Drought

CNBC: "Bill Gates is backing the first high-altitude experiment of one radical climate change solution—creating a massive chemical cloud that could cool the Earth. It's called solar geo-engineering."

"But it also comes with significant risks and uncertainties: Things like mass famine, mass flooding, drought."

"It could eradicate blue sky... You have less direct light, which is the same thing as saying it looks hazy and white."

On a scale of 0-10, how likely do you think it is that they're doing this already?