Hillary Clinton thinks corporate taxes are too low. Donald Trump thinks corporate taxes are way too high. They’re both wrong, and the economic consequences could be huge if either nominee’s tax proposal becomes law. Trump would slash the rate to 15 percent and allow millions of partnerships and single-owner firms set up by hedge fund managers, lawyers and other …

  Megan McArdle Since I last wrote about it, Aetna’s withdrawal from the Obamacare exchanges has ginned up even more drama. Jeff Young and Jonathan Cohn of the Huffington Post published a letter in which Aetna told the Justice Department that it would reduce its exchange participation unless Justice allowed the merger with Humana to go through. This has naturally …

  justin fox Children and teenagers in the world’s developed countries have a more than 50 percent chance of living past 100. By the early 2100s, in other words, “being a centenarian will no longer be a rarity. In fact, it will be the norm.” That’s from Lynda Gratton and Andrew Scott’s book, “The 100-Year Life: Living and Working in …