In a new intergovernmental report, scientists say a million species of plants and animals could go extinct due to climate change, many within our lifetimes. Duke University Professor Alexander Pfaff contributed to the report. He's here to talk about history, and the five hurdles that have tripped policymakers and advocates up in the past when it comes to reversing environmental loss.

Show Notes:

Read the op-ed Alexander Pfaff wrote for The Hill

Music: Open Flames by Blue Dot Sessions / Licensed under Creative Commons Attribution