President-elect Donald Trump threatens to hit Canada, Mexico and China with tariffs. He says they aren't doing enough to stop undocumented migrants and fentanyl smugglers from crossing into the U.S.

Over a lifetime, Martyn Stewart has recorded the sounds of a changing planet. Now, he's made an album with music producer ONR. "Imperfect Cadence" is a call to conserve the wilds of Scotland.