If we think of cities as organisms, their DNA is the hodgepodge of rules that shape development. Urban planner Emily Talen talks about how city zoning, coding and laws got started, and how they need to be changed to help us build more livable cities.
Take a look at a visual archive of city plans.
Fernanda Eberstadt talks with Steve Paulson about the gypsy community of Perpignan. They’ve lived in this southern French city for some 500 years but don’t consider themselves French.
David Anderegg is a Professor of Psychology at Bennington and the author of "Nerds: Who They Are and Why We Need More of Them." He tells Steve Paulson about his inspiration for writing the book.
Reporter Charles Monroe-Kane visits one of the last surviving grist mills in the US. He learns how water power is used to grind wheat into flour, and learns something about himself as well.
Renowned religious historian Elaine Pagels says the Book of Revelation is the Bible's most controversial book and she explains its enduring appeal.
