Somewhere between 97 and 99 percent of scientists are convinced by the evidence that climate change is real, human caused, and a problem. But at a recent hearing held by the House Committee on Science, Space and Technology, only 25 percent of the witnesses reflected that position: Michael Mann. 

This weekend, thousands of scientists will be marching to protest the Trump administration. On this episode we hear from three of them. 

Last week — to the surprise of no one — Donald Trump issued an executive order to begin dismantling the Clean Power Plan. But the country's keystone rule on climate change isn't dead yet.