The state Fish and Boat Commission confirmed through photos that the fish, which flopped back into the water, was a piranha.
Weather forecasters predict a four-day stretch of 90-degree days with a break Monday, when clouds and thunderstorms are expected to move in.
Calculations indicate that there is a 99 percent probability that 2016 will be hotter than 2015, the current record holder.
NASA scientists announced Tuesday that global temperatures so far this year are much higher than in the first half of 2015.
But if gas prices stay low and consumers keep buying less-efficient vehicles like SUVs, the government could lower those standards.
Hydrofluorocarbons, or HFCs - spare the ozone layer but are still powerful greenhouse warming agents.
Results show an association between the two, but as one health adviser points out, not a “cause and effect.”
The 18-mile pipeline construction project is fined $1.5 million for landslide, waste water discharges that impacted streams and wetlands.
The huge animals also are doing well in the Carolinas.
Michael Mann, a prominent climate scientist at Penn State University, will lead the online conversation this afternoon.
And the distribution of clouds has shifted in such a way as to make global warming worse.
A new Senior Environment Corps chapter is being created in Beaver County to join other volunteers around the state.
Kids who sucked their thumb or bit their nails were less likely to get allergies as teens and adults, according to a study in Pediatrics.
And if that’s not enough, meteorologists calculated that 2016 is flirting with the U.S. record for most billion-dollar weather disasters.
The report released by Global Witness called the 185 deaths it uncovered “shocking,” a nearly 60 percent increase from the previous year.
A survey on the Pittsburgh Parks Conservancy’s website allows people to share ideas for the redevelopment of Heth’s Run in Highland Park.
When overburdened sewerage pipes overflow into the rivers during heavy rains, the public will now receive electronic alerts for safety.
Nearly three decades after banning chemicals that were destroying the ozone, there are signs the atmosphere is on the mend.
The state House has rejected a proposal that would have allowed development of hotels, amusement parks and water slides on state park lands
DCNR designates five new Wild Areas in state forests while legislators seek to open state parks for commercial development and recreation.
That number grew to $5 billion more than previously reported on the eve of a settlement to be filed today in a San Francisco court.
Some families concerned about the Zika virus are looking to commercial sprays to treat their property.
The findings demonstrate a powerful method of carbon storage that could reduce some of the human-caused greenhouse gas emissions.
The sanitation authority’s Summer Science camps prepare the next generation for the challenges of a changing environment.
The expanded network of seismic monitors will provide an open and ongoing record of shaking beneath Pennsylvania.
Despite predictions of swarms and nighttime noise, the insect has been mostly absent in the city.
The beermaker will pay approximately $7 million for improvements and $2.8 million in fines for wastewater issues.
It is the first major overhaul of toxic chemicals rules in 40 years.
The Pennsylvania Republican is labeled a member of the “Dirty Dozen” for his record on clean air and water protections.
The 660-acre plot in Hays is now a wild, wooded treasure of views, old trees, streams, a waterfall — and a yet-unknown price tag to develop.
The 2016 race downward in Arctic sea ice continued in May with a dramatic new record.
Part of a $1 million grant from the Richard King Mellon Foundation, Girls Scouts are encouraged to spend more time outdoors.
The U.S. Army Corps of Engineers and Riverlife propose a $10.8 million project to restore more natural riparian area along upper Ohio River.
Zoos from Maryland to Arizona were assuring visitors that their facilities are safe.
Nearly 40 previously unreported major sources of sulfur dioxide emissions were revealed.
The reef has seen major bleaching in some areas, and the expectation has long been that this event would result in significant coral death.
State declares ”Code Orange” air pollution day due to high smog levels and is urging young and elderly to restrict outdoor activities.
In a sweeping synthesis of global data, the Environment Programme has intensively cataloged environmental assaults across the globe.
John Quigley urged environmental groups to take action, a move some say clouded his objectivity as a Cabinet member.
A.J. Myers and Sons is accused of misappropriation of fuel costing the district between $260,000 and $384,500.
The two sides reached an undisclosed agreement over a Lycoming County gas well regulators said leaked methane into drinking water supplies.
Opponents of shale gas drilling near the Mars School District campus asked a judge to throw out a leaseholders’ lawsuit against them.
Bertrand Piccard and Andre Borschberg visited the Energy Innovation Center in Hill District between stops in round-the-world journey.
U.S. Steel plant has committed 6,700 pollution violations from Jan. 1, 2012 to May 31, 2015.
Its researchers also determined that some 30,000 plant species had a documented use.
The agency said the problem is hitting the poorest city dwellers hardest and contributing to a wide range of health problems.
Workers may deploy pesticides to kill mosquitoes around the homes of Zika-infected people in Pennsylvania, part of a statewide control plan.
Communities of microbes that help support life were dramatically altered and less diverse downstream from a West Virginia storage site.
State and federal environmental agencies conduct investigation after Glasgow residents raise concerns about dust emissions.
From brain implants to industrial uses, Pitt pair ready to market new anti-stick coatings additive.