The 95-year-old Blue Bird Corp. sees its future in electric school buses, with a boost from federal incentives.

PFAS are linked to health issues including cancer. Critics are concerned about the costs of complying with the proposed standards.

Executive agencies implement laws passed by Congress. The conservative legal movement seeks to limit their power.

The EPA has proposed new limits on methane emissions from oil and natural gas facilities, which already leak more than the agency estimates.

Environmental groups argue that the oil-and-gas industry emits nearly twice as much of the greenhouse gas as the agency reports.

Supporters, foes and independent observers of the Trump administration agree that deregulation will remain a top priority.

President Donald J. Trump announced the news in a tweet this afternoon.

Under the new policy, academic study authors will have to share their raw data, leaving it vulnerable to distortion, some worry.