How will the world end and what can we do to prevent it? "River to River" talks with Paul Wapner, an expert in global environmental politics about the human suffering extreme climate change continues to cause.
Also University of Iowa astrophysicist Steve Spangler joins us to discuss the asteroid that will be whizzing by Earth—at a distance a bit too close for comfort—on Friday. We’ll ask Spangler about the possibility of a massive asteroid destroying our planet in the near future.
