Smart Cities Challenge

Kathleen J. Davis / 90.5 WESA

The fuel efficiency of new cars has improved by 10 percent in the last five years, according to the Union of Concerned Scientists, but advocates at PennEnvironment fear the federal standard that required car manufacturers to make those changes could be in danger.

J. Scott Applewhite / AP

Congress is back in session, and they have less than two weeks of legislative days to solve a slew of problems. By the end of the month, Congress needs to: