It's time to tour China's most popular city Shanghai. Stillwell and Ingram look at how the old and new mingle to make this city stand out. Shanghai Racetrack - Put the pedal to the metal, Shanghai-style! See how three racecar drivers take their Formula Renault-class cars out on the brand new Shanghai International Circuit. Shanghai Architecture - Shanghai is renowned for it's stunning collection of old buildings. Controlling the Weather - There's a severe drought in Northern China, and it is expected to get worse. See what Chinese scientists are doing to help their nation cope. Also in this episode: driverless autos; rescue robots that can snake through earthquake and crash site disasters; how tea is harvested and processed; and Ma Qingyun, China's most innovative architect.