The state’s secretary of transportation, Stephanie Pollack, is a liberal in a conservative administration and an advocate in an administrative post. But she’s making it work.
In Minnesota, women will be paid to persuade resistant farmers to care and do something about the state's increasingly polluted waterways.
In an effort to help people become less car-dependent, cities like Denver are getting directly involved in the creation of transportation apps.
A few cities are using leftovers to power buses and buildings.