Methane has 25 times the global warming potential of carbon dioxide.
The new rules limiting ozone levels face a legal challenge from a coal company.
The House voted to block coal ash regulations in 2011.
A coalition is pressing the EPA for a "sunset" rule on chemical industry confidentiality.
EPA adviser on environmental justice Lisa Garcia is joining the law group Earthjustice.
Environmentalists say the EPA shirked its duties by writing rules that are too weak.
Environmental groups have sued the federal government in an attempt to block a new liquefied...
Lawmakers and environmental groups say older rail cars pose unacceptable risks.
Two green groups plan to sue the Fish and Wildlife Service over its decisions to not designate the...
Fed appeals court called Interior Dept.'s environmental analysis of drilling leases flawed.