Bloomberg: The phrase unburnable carbon has gained currency among climate-minded investors, popularized by a U.K.-based nonprofit called the Carbon Tracker Initiative. It refers to the vast fossil-fuel reserves that, if burned, would probably push the global climate into the danger zone.
Some investors are concerned that stock-market valuations would plummet if oil companies continue to spend hundreds of billions of dollars on exploration while the world lunges away from oil. Last week, a coalition of...