Posthuman Blues

Geoengineering: How to Cool Earth--At a Price

So far, however, relatively little research has been done on any of the approaches or on their potentially substantial and unpredictable side effects. "There’s a lot more talk than work," Caldeira says. "Most of the research has been at the hobby level." Some ideas do not merit much more than that -- scattering reflective particles over a large part of the ocean, for instance, would inevitably pollute it, and the particles would probably wash up on beaches fairly quickly. But others are harder to dismiss.