Today, civilization is centered around our cities. More than half of the human population resides in an urban environment, and by 2050, that figure rise to over 70%. Yet, the cities of today must not become the cities of the future. Our current urban landscapes lack the sustainability and equity needed for a healthy and happy twenty-first century. Transportation will play a key role in the future of our cities. This four-part podcast interviews four different experts in the field of transportation as it relates to our urban spaces.