Bloomberg: For once, the news on the environmental front isn't just good, it could be taken as a point of pride. This week, scientists announced that the infamous ozone hole over Antarctica is starting to heal. In 1987, the world agreed to phase out chemicals that were destroying a layer of gas in the upper atmosphere that shields the planet from damaging ultraviolet light. This week, in the journal Science, researchers said they're finally starting to detect results. In September, the hole had shrunk...