Scientists are racing to find new ways to slow down global warming, going as far to investigate ways to dim the Sun by producing clouds over the ocean. The concept, known as solar geoengineering, has proven incredibly controversial in the past, with critics pointing out we simply don't know enough about the risks, including the environmental and societal impacts of tinkering with the weather. Proponents, on the other hand, argue we need to take drastic action in light of drastic changes in our planet's climate. But the secretive ways scientists are going about their early geoengineering projects is leaving the […]