Three environmental groups are suing the EPA, asking a judge to order the agency to reassess its regulations on the chemical.

Officials say a power outage at an oil refinery in Delaware County was behind the sulfur-like smell reported in neighboring communities Thursday and Friday.

If you were out and about Thursday morning in Southern Delaware County, Pa., or Northern New Castle County, Del., there ...

Multiple emergency agencies in Delaware and Delaware County are receiving reports of an unexplained odor on Thursday.

A power outage at Monroe Energy in Marcus Hook, Pennsylvania, caused the strong gas odor many smelled in northern Delaware.

Officials say the odor is from an equipment failure at a refinery in Trainer, Pennsylvania. It happened around 8 a.m. and 9 a ...

A power outage at the Monroe Energy facility in Marcus Hook, Pa., likely caused a gas odor that was reported in New Castle ...

An equipment failure at a refinery in Marcus Hook has led to a sulfur odor spreading across the Philadelphia region, fire ...

If passed, a Delaware bill could quadruple fines for polluters while increasing support for local environmental projects.

Residents living near the Delaware City Refinery were finally able to get some answers on Thursday night after an equipment malfunction first reported on May 26.

Sunoco told the mayor the Marcus Hook refinery would be shutting down. The 500-odd men working there were done. “The whole town just went crazy,” Manerchia said.