For our year-in-review show, we open with a Russiagate update with David Klion—he says it’s basically a corruption scandal whose basic facts have been obvious for a long time—and one that should bring down Trump’s presidency.

In a lot of ways, Trump himself was the biggest story in 2018—we ask Amy Wilentz the key question: “Is Trump crazy?” She discusses the mental and emotional status of the president, as analyzed by 27 psychiatrists in The Dangerous Case of Donald Trump, a book edited by Bandy X. Lee. The book was number four on the New York Times best-seller list.

And the biggest story of the year, for all of humanity, has been catastrophic climate change—Bill McKibben says “it’s not just an environmental issue.”