Geoengineering is a legitimate area of research, but generally speaking, the scientific community recognizes the extreme danger of deliberately tinkering with the planet. After all, look what we've done inadvertently. What would happen if we actually tried to change the climate?
At a 2015 European Geosciences Union General Assembly Just last week, more than 11,000 scientists gathered to discuss, among other things, the perils of atmospheric engineering. One of the big topics concerned a climate engineering concept with a relatively long history and a bit of current momentum - shooting artificial volcano ash into the stratosphere.
Researchers who have studied the geological record have noted that major volcano eruptions, ironically, tend to cool down the planet. That's because volcanoes throw millions of tons of sulfur dioxide aerosols into the stratosphere, which in turn act like a sunscreen, bouncing sunlight back into space. Over the years, proposals have been put on the table to shoot such aerosols into the stratosphere with aircraft, rockets, balloons and even massive artillery guns.