Link to article -- pay site

"Seriously addressing climate change means cutting carbon emissions and, ultimately, reducing the carbon already in the atmosphere. There’s no way around it. Another type of intervention, however, is increasingly garnering attention: solar geoengineering, that is, cooling the planet by making it reflect back more of the sun’s rays."

"Our own rough estimates suggest that a concerted program—involving at first, say, a dozen specially designed high-flying planes to deliver aerosols into the stratosphere near the equator—would have startup costs of under $5 billion for the aircraft and necessary technical infrastructure."

Snowmageddon.