President-elect Donald J. Trump has selected Scott Pruitt, the Oklahoma attorney general and a close ally of the fossil fuel industry, to run the Environmental Protection Agency, signaling Mr. Trump’s determination to dismantle President Obama’s efforts to counter climate change — and much of the EPA itself.
Mr. Pruitt, a Republican, has been a key architect of the legal battle against Mr. Obama’s climate change policies, actions that fit with the president-elect’s comments during the campaign.