Scientists agree that human activity is at the root of global warming. As more international protests bring the consequences of a warming planet to the mainstream media, presidential candidates are announcing how they would deal with the crisis. But will any of their plans actually work or go far enough in stemming the problem?
 
The Democratic National Committee recently held a 7-hour climate change town hall with presidential candidates. While we have many more months of debate and a crowded Democratic field, I’m going to grade the climate action plans of two frontrunners based on how effective I believe the plans are. We’ll start with two candidates who have been involved in politics for decades: Joe Biden and Bernie Sanders.