Many of us have nostalgic memories of waking up on winter mornings to welcome news of a snow day, allowing us to skip school or stay under the blanket for a few more precious hours. As temperatures drop in the Chinese mainland, schoolchildren there have become acquainted with their own version of a snow day: The smog day, which occurs when schools and workplaces shut down due to hazardous levels of pollution and heavy haze. But you can't make smog angels. Indeed, citizen discontent at China's off-the-charts environmental degradation is quickly growing into a potential menace to the ruling Communist regime. Issues like unmet demand for political rights are no longer the party's only existential threat -  See more here.