Key parts of the 2017 tax cuts expire at the end of this year, and the Trump administration is interested in Congress making them permanent. Supporters of a tax cut extension say it would pay for itself. But was that the case in 2017? We’ll do the numbers. Plus, it may sound straight out of a sci-fi flick, but one bioscience firm is attempting to resurrect woolly mammoths, dodo birds and other extinct wildlife.