Grist: If you`ve been paying attention to the 2016 presidential debates, you may have noticed one topic that has been absent. While the GOP candidates have discussed everything from the price of tractors in China to killing baby Hitler to Carly Fiorina`s face, they have been almost silent on the gravest global threat of our age: climate change.
Now, this isn`t entirely the candidates` fault (although not accepting climate change science certainly is), since the moderators in charge have barely mentioned...