Todd Graham, CNN debate analyst and "America’s Debate Coach," takes a minute to explain what voters expect to learn from presidential debates and why it's helpful for the candidates to debate more than once.

Amy Webb discusses artificial intelligence.

Will gas flow in the Nord Stream 2 pipeline if Russia invades Ukraine? Council President Ivo Daalder argues on CNN it is "inconceivable."

In this episode, expert Rachel Bronson takes a minute to explain how the Doomsday Clock works, examine if nuclear weapons make the world safer, and recommend her favorite movie involving nuclear warfare.