The Sun Also Rises...Over There

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)

David Kestenbaum desperately wants to set the record straight for everybody about whether aliens regularly visit earth.

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)