Bloomberg: Fossil-fuel assets such as coal mines and gas wells may lose value if climate change prompts tougher regulations, according to a report from Al Gore and David Bloods Generation Investment Management. About two-thirds of the fossil fuels still underground must remain there if the planet is to meet a United Nations target of limiting global warming to 2 degrees Celsius (3.6 degrees Fahrenheit). That means assets such as coal mines and gas wells may have to reduce production, cutting profits, according...