A Belated Thanksgiving: The Atlantic Ocean Is Healing Itself

I couldn't, post-election, muster a plausibly big enough piece of good news to warrant a Thanksgiving blog -- but then this morning one arrived. In an astonishingly short eight years, as a result of tougher emission rules on power plants and a declining use of coal, concentrations of mercury in Atlantic Bluefin tuna, the sushi sort, dropped by 19 percent. There are similar findings for bluefish, but tuna are much longer lived, so the results are extremely surprising -- concentrations of mercury ...