EPA proposes stricter limits on ozone, cites health savings

The U.S. Environmental Protection Agency is proposing stronger standards that would reduce smog-producing emissions.

1 day ago

Supreme Court to hear case on Clean Air Act

Justices to hear power plant pollution case and weigh consideration of economic costs relating to EPA regulations.

2 days ago

 John Muir circa 1860s

John Muir's legacy questioned

Some doubt the relevance today of an environmentalist who advocated protecting nature in its pristine state.

5 days ago

Pennsylvania DEP to fine Sunoco for releasing drilling clay into creek

Sunoco spokesman Jeff Shields says the company is working with the Pennsylvania Fish and Boat Commission to remedy the release of the clay.

1 week ago

 Mara Sweterlitsch, 47, uses a speech-generating device to communicate with the world.

Medicare policy changes rattle those who depend on communication devices

A possible change in Medicare policy has rattled people with disabilities who depend on communication tools to function.

1 week ago

 U.S. House Speaker John Boehner, R-Ohio, center, departs Friday after the Republican-led House passed a bill that would approve construction of the Keystone XL pipeline by a decisive vote of 252 to 161.

House approves Keystone pipeline

President Barack Obama is signaling that he is likely to veto a bill authorizing the Keystone XL oil pipeline.

1 week ago

House, Senate to vote on Keystone XL pipeline

Long-stalled legislation to build the pipeline got new life after Senate Democrats suddenly abandoned efforts to block it.

2 weeks ago

 Deer roam and graze near a home along Lakemont Drive in Mt. Lebanon.

Mt. Lebanon moving forward with deer cull plan

A group called Lebo Residents for Effective Deer Management has presented petitions bearing some 1,200 signatures to the municipality.

2 weeks ago

 A cold front is pushing east, causing temperatures to plummet to the mid-20s tonight in the Pittsburgh area. In January, above, crossing guard Barbara O'Toole braved the cold to shepherd her charges in McKees Rocks.

Icy blast makes its way to Western Pennsylvania

Temperatures that hit 70 on Tuesday are expected to plummet into the mid-20s tonight, according to forecasts.

2 weeks ago

In Barcelona, a global call for energy-efficient buildings

A conference of builders issues an imperative: As world population grows, our structures of the near future must be sustainable.

2 weeks ago

Pennsylvania DEP revises proposal to limit emissions from coal-fired power plants

The new proposed rule requires the state’s more than two dozen power plants to install and operate Reasonably Available Control Technology

3 weeks ago

U.N. warns against climate inaction

The gathering risks of climate change are so profound they could stall or even reverse generations of progress.

3 weeks ago

 Koda, a 10-year-old male polar bear, walks along the rocks of his exhibit at the Pittsburgh Zoo & PPG Aquarium.  Melting polar ice threatens the bears’ survival, so the zoo incorporated global warming concerns in “Water’s Edge,” a facsimile Arctic outpost adjoining the habitat.

Discussion of climate change is scarce at some Pittsburgh science-education institutions

Science says the planet is getting warmer, but museum professionals cite several obstacles to raising the issue on the exhibit floor.

3 weeks ago

 A view from the Monterey Bay Aquarium, where in 2010 a climate-change exhibit outraged dairy farmers by featuring a cow wearing a gas mask. (Cows are a source of methane, a greenhouse gas.) The mask was removed.

Across America, science center offerings on climate change are often scant

Experts say science-education facilities nationwide could do better at talking about climate change, but that can mean taking some heat.

3 weeks ago


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