Warren lays out what she'd target during first 100 days on climate

The big picture: Warren vowed a day-one executive order "rolling back all of Donald Trump’s disastrous pro-fossil fuels policies," as well as banning new fossil fuel leases on public lands and waters.

• Another move would be introducing legislation to enable a much faster transition away from fossil fuels.

Reality check: Despite the "100-day" vow, much of this would be a splashy move to undertake what would be time-consuming executive policy and push long-shot legislation.

• Trump administration regulations can't be nixed via executive order. Instead, such an order would be a starting gun for agencies to get to work.

Go deeper:

• Elizabeth Warren on the issues, in under 500 words
• What makes the 2020 election historic for climate change
• Where top 2020 candidates stand on climate policy and the Green New Deal