evidence: Climate advocates have highlighted Harris’ record stretching back two decades to her time as San Francisco district attorney, saying she’s worked throughout her career to protect the environment, as well as communities that suffer disproportionately from pollution. [...] Harris has picked up endorsements from groups including the Sierra Club, the League of Conservation Voters and the Green New Deal Network, a coalition of groups that held back support for Biden’s reelection. Also backing the vice president are prominent advocates for aggressive action on climate change, including former U.S. climate envoy John Kerry, Washington State Gov. Jay Inslee and Steven Chu, who was energy secretary under former President Barack Obama. [...] After she was elected to the U.S. Senate in 2016, Harris pushed for more aggressive climate policies. She co-sponsored the Green New Deal, a sweeping proposal for climate action championed by the progressive Rep. Alexandria Ocasio-Cortez, D-N.Y., which was not ultimately adopted. When she ran in the Democratic primary for president in 2019, Harris supported a ban on the oil and gas drilling technique known as fracking. Harris’ campaign says she no longer supports such a ban. Pennsylvania, a battleground state seen as key to the race for the White House, is a major natural gas producer.