There is no law or treaty to prevent a private company from tinkering with geo-engineering—say, releasing sulphur dioxide high in the stratosphere to alter the climate. The US Clean Air Act isn’t set up to deal with this sort of thing—it’s focused on power plants, cars and regional air-quality standards, said UCLA environmental law professor Edward Parson. They’d make money …
The eruption of Mt Pinatubo changed everything. "I think many of them, like the scientists who joined the Manhattan Project, or worked on various controversial ideas, really didn't feel they had a choice," he says. "The SPICE project was looking at solar geoengineering and there were three tranches to that project," Dr Hunt says. "The solution is mitigation, leaving the …
