If you have any questions about parking, Donald Shoup will definitely know the answer. The Distinguished Research Professor at UCLA's Department of Urban Planning is the author of The High Cost of Free Parking and studies how parking policies affect cities, the economy, and the environment.

Donald and his cartoon alter ego appeared on Adam Ruins Cars, and on the podcast he and Adam discuss the problems with free parking, how meter revenue can finance public services in metered neighborhoods, and Donald's endless similarities with Snoop Dogg.

Adam Conover is on Twitter @AdamConover and is currently touring the US.

You can find past episodes and bonus content from the TruTV show at AdamRuinsEverything.com.

Produced by Shara Morris for MaximumFun.org

You've seen it from rom-coms to Hallmark cards - our society is obsessed with everyone finding their soulmate. But did you know the idea of 'the one' is a relatively new concept in our culture? In fact, marriage and love were completely separate entities for centuries, and this week's podcast guest, Professor Stephanie Coontz, tells us all about it.

Stephanie Coontz, who appeared on Adam Ruins Weddings teaches history and family studies at The Evergreen State College. Her book, Marriage, a History: How Love Conquered Marriage traces the history of marriage from a union based on alliances and financial gain to today's notion of finding our 'other half'.

Adam and Stephanie discuss how the Enlightenment altered our idea of marriage, how the media covers love, and how equality is erotic.

Adam is on Twitter @AdamConover and is currently touring the US.

You can find past episodes and bonus content from the TruTV show at AdamRuinsEverything.com.

Produced by Shara Morris for MaximumFun.org.