President Obama Explains Why Climate Change Is The Worlds Most Serious Problem

President Obama was interviewed on his legacy.  In this video he discusses how his mind was changed about climate change.  He also responds to criticisms about his ability to enlist Congress in his response to the problem of climate change.  He argues that he has set things in motion that will difficult even for Congress to unwind.  After he leaves office he will continue to promote global efforts to respond to the most serious problem faced by humanity.