Wind turbines near Palm Springs, Calif. Several states, including New York and California, are pushing ambitious green-energy policies to fight global warming. Credit: Beth Coller for The New York Times

WASHINGTON — At a time when the country is already deeply fractured along partisan lines, individual states are starting to pursue vastly different policies on climate change with the potential to cement an economic and social divide for years to come.

A growing number of blue states are adopting sweeping new climate laws — such as New York’s bill, passed this week, to zero out net greenhouse gas emissions by 2050 — that aim to reorient their entire economies around clean energy, transforming the way people get their electricity, heat their homes and commute to work.

But these laws are passing almost exclusively in states controlled by Democrats, while Republican-led states have largely resisted enacting aggressive new climate policies in recent years. At the same time, the Trump administration is rolling back federal climate regulations, which means many red […]

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