Environmental and health groups have filed a lawsuit against the Environmental Protection Agency after the Trump administration moved to rescind the "endangerment finding," a 2009 determination that established that greenhouse gases threaten public health and welfare. That simple conclusion became the foundation for nearly ever rule limiting pollution for the last seventeen years. Former Democratic Governor of Washington Jay Inslee, a national leader on climate action, joins the show from Portland, Oregon.  

Also on today's show: Famed filmmaker Werner Herzog and conservation biologist Steve Boyes discuss "Ghost Elephants"; former NYT opinion columnist David Brooks