Copenhagen has long been a paragon in urban planning circles. Karsten Palsson, CEO of Palsson Urbanism, says it's under threat from commercial development interests and weakened government, and now is the time to rearticulate and potentially export the principles that made it a paragon in the first place. Unfrozen sits with the author of "How to Design Humane Cities - Public Spaces and Urbanity," and the new "Urban Block Cities - 10 principles for Contemporary Planning."

Intro/Outro: "Old Wine, New Bottles," by Silver Convention