The operator of the long-delayed Keystone XL crude oil pipeline has formally asked South Dakota's utility regulators to recertify the portion of the project that runs through the state.
Duke Energy plans to invest $500 million in solar power to meet North Carolina's requirement that more of its electricity come from renewable energy.
A crew from Nestlé Purina is assessing damage from a grain-dust explosion that injured four contract workers at the company's plant in Flagstaff, Arizona.
Environmental Protection Agency Administrator Gina McCarthy said Monday she's not backing down on her agency's efforts to implement a new rule that would assert regulatory authority over many of the nation's streams and wetlands despite criticisms that it amounts to a federal water grab.
A measure of prices that producers receive for their goods and services was unchanged in August, the latest sign that inflation is in check.
Emails showing California regulators and Pacific Gas & Electric Co. appearing to negotiate which judge would be assigned to hear one of the utility's rate cases led the state's top regulator to remove himself from two PG&E cases and four senior officials on both sides to resign.
A lawsuit against a water company, chemical producer, airport and others over a January chemical spill won't get a hearing for another year.
A new study says that the drilling procedure called fracking didn't cause much-publicized cases of tainted water, blaming contamination on leaky natural gas wells instead.
Several environmental groups are appealing a decision by Skagit County officials that they say will allow a proposal for an oil-train facility at an Anacortes refinery to move forward without a serious review of the risks.
State oil regulators say North Dakota's daily oil production reached more than 1.1 million barrels in July.
Steel company Nucor is buying Gallatin Steel Co. for about $770 million, which will expand Nucor's footprint in the Midwest.
U.S. manufacturing output declined in August for the first time in seven months, reflecting a sharp fall in production at auto plants.
Flames from welding equipment touched off a grain-dust explosion at a Nestlé Purina plant in Flagstaff, burning two workers severely and leaving two others with less serious burns, authorities said.
Regulators say that British Airways violated safety rules by shipping an oxygen generator on an American Airlines flight from London to Dallas, and they are seeking to fine BA $195,000.
A contractor was killed and two others were injured Saturday during maintenance on a Chevron natural gas pipeline off the Louisiana coast, authorities said.