Blue Sky Limousine

A couple of theories on why dinosaurs are now extinct involve the dimming of the sky by massive amounts of dust or ash, provided either by an impacted space object or huge volcanic eruption. With less sunlight, the plants died, then the herbivores, then the carnivores. Less sunlight also would have cooled the earth somewhat. Maybe we can use this.

If we put a little bit of material in the air, which would technically be a lot, but little in comparison with the amount necessary for an extinction even, we could theoretically cool the earth. Sunlight would come into the atmosphere, and bounce off the dust, going back into space. We’d only need enough to adjust the average global temperature a few degrees.

How would we accomplish this? We could use factories that spew the specially-formulated dust mixture into the air, 24/7. Lots of dust would end up coming down in rain and snow, effectively creating muddy rain, but perhaps the natural cycles of nature would continue to filter our main water reservoirs at ground level. And the amount of new dust in each drop of water might not even be that much at all.

Crazy talk, or worth looking into?