Is your electric car really helping the environment? That depends on where the electricity is coming from. Quartz sums up the findings of University of Toronto report: “Think about it this way: Every Nissan Leaf might run on electric power, but how that electricity was generated determines what greenhouse gas emissions the car is responsible for.”

+ NPR: Why China’s pollution could be behind your cold, snowy winter.

+ How cold and snowy has it been along the east coast? Icebergs are washing up on Cape Cod. (Luckily, I prefer my Cape Codders on the rocks.)