Big physics is on a roll. It seems like only yesterday we were applauding the discovery of the Higgs boson at the Large Hadron Collider. And then this week came word that the BICEP2 microwave telescope at the South Pole had found evidence of gravitational waves from the inflationary epoch – a glimpse of the universe at the time of the Big Bang, or maybe even before. "Holy crap!" was my reaction, but I needed something more for a radio show, so I got in touch with Anthony Aguirre. Cosmic inflation is one of his specialties, and I thought he'd be a great person to explain the new findings. He was. And I stand by my initial assessment: holy crap!