Donald Trump has turned back more climate-related safety measures in the past year than any president in history. Jeff Orlowski, the Oscar short-listed filmmaker behind "Chasing Coral" and "Chasing Ice," joins us to lay out the implications of our warming planet, how most of the coral reefs on earth are dying, and why that is even more terrifying than you think. Orlowski explains that we could be at the beginning of the sixth mass extinction.