Time: As I report on climate change, I come across a lot of scary facts, like the possibility that thawing permafrost in Siberia could release gigatons of carbon dioxide into the atmosphere or the risk that Greenland could pass a tipping point and begin to melt rapidly. But one of the most frightening studies I've read recently had nothing to do with icebergs or mega-droughts. In a paper that came out Oct. 23 in Science, John Sterman — a professor at Massachusetts Institute of Technology's (MIT) Sloan School of Management — wrote about asking 212 MIT grad students to give a rough idea of how much governments need to reduce global greenhouse gas emissions by to eventually stop the increase in the concentration of carbon in the atmosphere. These students had training in science, technology, mathematics and economics at one of the best schools in the world — they are probably a lot smarter than you or me. Yet 84% of Sterman's subjects got the question wrong, greatly underestimating the degree to which greenhouse gas emissions need to fall. When the MIT kids can't figure out climate change, what are the odds that the broader public will?