It used to be a global capital of innovation, invention, and exploration. Now it’s best known for its messy European divorce. We visit London to see if the British spirit of discovery is still alive. Guests include the mayor of London, undersea explorers, a time-use researcher, and a theoretical physicist who helped Liverpool win the Champions League. Dan Schreiber from No Such Thing as a Fish rides shotgun.

Most high-school math classes are still preparing students for the Sputnik era. Steve Levitt wants to get rid of the “geometry sandwich” and instead have kids learn what they really need in the modern era: data fluency.