WBUR: It sounds like science fiction: Massive engineering projects to deflect the sun`s rays in an attempt to reduce the warming effects of climate change. And yet, with the continuing rise in global greenhouse gas emissions, geoengineering has become an increasingly common topic of discussion among climate scientists, policy makers and national security experts.
Jason Blackstock, John Steinbruner and Armond Cohen examine the arguments for, and challenges presented by, the prospect of geoengineering...