Is it possible for the U.S. to reach the goals set by the Paris Agreement? What steps would we have to take to cut emissions by 50% by 2030? We challenge climate researcher Melissa Lott to get us to that number. (11 minutes)
Senior Editor David Kestenbaum talks with a different kind of advocacy group: animal scientists doing their best to save a particular species before it winks out of existence. (16 minutes)
