Wildfires, rising seas, and rollbacks by the Trump administration that undermine California’s authority to pursue pioneering environmental policies have put climate change top of mind for Democratic voters. The party’s presidential candidates — former Vice President Joe Biden and Vermont Sen. Bernie Sanders — both have robust climate action agendas.

It was a rare instance in this primary where candidates marched mostly to the same beat. Both Sanders and Biden vow to immediately reenlist the U.S. in the Paris accord to fight global warming.

Both would scrap all of the Trump rollbacks and set a firm deadline for moving the nation to net zero emissions, the point at which any greenhouse gas emissions caused by humans are balanced by carbon sinks in the environment or technologies that remove carbon from the atmosphere.

The differences lie in how far, how fast and how much to spend. Are they calling for the phaseout of all fossil fuels by a certain date? Do they see nuclear energy as part of a zero-emissions future? Are they looking to immediately ban fracking? We break down where they stand and what climate policy would look like under the vision offered by the Democratic hopefuls.

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