Fed up with slow (or in some cases, backwards) progress on climate change, environmental advocates are mulling desperate measures. Emerging at the head of this pack is arguably the world’s most prominent climate scientist: James Hansen, a former NASA researcher turned activist.
In a provocative study published earlier this month, Hansen and a group of colleagues make the case for why radical action is needed. The now commonly embraced international target of keeping global warming at a maximum of 2°Cabove pre-industrial levels—a hard-won, but politically negotiated goal—is actually much too high, Hansen says, and we should instead aim for 1°C. That would be barely a blip higher than current levels of global warming (around 0.8°C), but still the highest level ever experienced over the 10,000-year course of human civilization. ”Our objective is to define what the science indicates is needed, not to assess political feasibility,” the paper says.