Children are the future.

They are also curious, wondering what the future of our planet will look like when they grow old enough to drive, see R-rated movies, work (yuck), vote, rent a car or ultimately have kids of their own.

A class of fourth graders from Green Bay public schools recently submitted questions about renewable energy and the environment to WPR’s "The Morning Show."

Greg Nemet, an associate professor at the University of Wisconsin-Madison's La Follette School of Public Affairs, joined the show to answer those questions.