Plan to reduce greenhouse gas emissions is expected to be announced Monday.
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The federal appeals court also upheld the EPA’s right to impose the standards, which states and industry groups called overly burdensome.
The State Department of Environmental Protection issues a code orange for ozone Tuesday as temperatures approach 90 degrees.
Thirteen major firms offer billions in environmental financing pledges to support Obama administration’s global climate change agreement.
Testing found evidence of radiation contamination in water discharges likely related to past dumping of shale gas drilling wastewater.
Vivien Li, who for 24 years led the Boston Harbor Association, becomes president and CEO of Riverlife on Oct 1.
The state has issued a “code orange” alert with the air quality index expected to enter the range of 101 to 150 for Pittsburgh,
The school board is looking into generating enough electricity from district rooftops to provide about 70 percent of its energy needs.
With the return of the seal and federal protections, great white sharks have returned to Atlantic Coast shorelines.
“Shark Week” and “Jaws” give sharks a bad rep, says Mt. Lebanon native David Shiffman. “Sharknado” films, not so much.
Sixty mayors from around the globe gathered to declare that climate change is real and man-made and to announce new measures to fight it.
El Nino, the expanding warmer-than-usual Pacific waters, is on pace this year to be the strongest on record, with ripple effects on weather
Vivien Li, president of The Boston Harbor Association, succeeds Lisa Schroeder, who ran Riverlife for 15 years before leaving in January.
The chick, named “Silver,” was the 43rd hatched by Dorothy, the female peregrine that has nested at the Oakland landmark since 2001.
Superintendent Curt Baker said Moon Area would be the first district in the Pittsburgh area to have such a system.
The fire had burned over Interstate 15 on Friday in Cajon Pass, a mountainous area 55 miles northeast of Los Angeles.
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The Tree Tenders program will unite local advocates on Saturday at the August Wilson Center in Downtown.
Under GTECH Strategies’ ReClaim McKeesport program, 10 “ambassadors” were given $3,000 each for a project they had chosen.
The academy’s students plant, grow, harvest and sell their own crops at the Fox Chapel Farmers Market.
The bill approved by Pittsburgh City Council makes it easier to get own limited amounts of chickens, goats, bees and other animals.
The Obama administration is boosting solar projects to make them available to low- and middle-income Americans.
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Larry Schweiger replaces former president and CEO Cindy Dunn, who now heads the state Department of Conservation and Natural Resources.
Asbestos, called the “hidden killer” because illnesses take decades to develop, still causes diseases despite not being made in the U.S.
In time for July 4, the Pennsylvania Game Commission proposed raising fines for killing bald eagles to $2,500 for a first offense.
Volunteers have collected nearly 50 tons of trash alone this year.