MAGIC FOO-FOO DUST: This story from the Star Tribune reports a breakthrough in coal-emissions scrubbing that could make coal-fired power plants pretty damned clean. I’m not entirely persuaded yet: two of the three main sources are the company that created it and the utility that tested it (but is also the main investor). But if coal could be burned cleanly with an inexpensive addon technology, it would substantially reduce dependence on foreign oil.