Urban innovators share a commitment to using new approaches, and often new technologies, to tackle long-standing challenges that seem unsolvable to others and that affect a large number of cities.  Despite urban innovators’ insightful ideas on new ways to solve metropolitan areas’ most difficult challenges, many lack access to critical resources, tools, and funding.

The Atlantic's Olga Khazan talks to biological anthropologist Helen Fisher about the four styles of thought and behavior.