Another year, another round of climate talks. We keep hearing that this year is different. That it’s more important. That there’s a big deal to be had. Sure, current international commitments on greenhouse gas emissions are set to run out by 2020, and many scientists are suggesting that we’ve reached a climate change tipping point, but why the urgency? Why do the talks in Paris this year really matter? Because it just keeps getting hotter and hotter and hotter… Witness six de