Today North Korea called off peace talks with South Korea and launched its sixth missile test in a month. We’ll examine when and why diplomatic talks turned sour. Then: President Trump has reportedly been floating his most ambitious real estate purchase to date… all of Greenland. It’s put the island in the headlines, but we’ll tell you why we should actually be talking about Greenland. Also on today’s show: state officials are freaking out over election infrastructure, and super-deep diamonds could hold the clues to what Earth looked like billions of years ago.