As world leaders gather in Paris to talk about climate change, one phrase that will dominate conversations is "two degrees." Global leaders will discuss how to prevent global temperatures from warming by more than two degrees since the industrial revolution.
From time to time during this election season we'll be introducing you to ordinary people that our reporters meet out on the campaign trail. Today: a snapshot from a Donald Trump rally in New Hampshire.
David Brooks of The New York Times and Amy Sullivan of Yahoo News discuss the 2016 presidential race, Francois Hollande's visit to the White House and Republican threats to shut down the government over a potential climate deal.