The 2020 Democrats on climate change

Ten Democratic candidates promised on Wednesday to take aggressive action to combat global warming during a CNN forum on climate change, the first such prime-time event in a presidential campaign. Almost all of the candidates have a goal of achieving carbon neutrality across the U.S. economy by 2050, but they differed on how to get there and how to pay for it.

Many candidates embraced the idea of taxing carbon dioxide pollution, a policy that most environmental economists agree is the most effective way to cut emissions but that has drawn intense political opposition. They also vowed to undo Trump administration environmental policies and promote renewable energy. Here’s what they said.