Environment & Science

A tropical system that was officially named Ophelia on Friday will drench the East Coast this weekend, including the Lehigh Valley, officials said.

The free festival runs from 10 a.m. to 3 p.m. at the center. The schedule includes nature walks, live animal presentations, monarch butterfly tagging, music and more.

Northampton County and its conservation district appear poised to split after a County Council committee meeting Wednesday showed deep distrust between them

Lehigh Valley Breathes, a Valley-wide effort, aims to measure air quality. From the collected data, officials said they will make recommendations for improvements.

It’s becoming increasingly probable that a subtropical storm develops off the Southeast coast this weekend, forecasters say, but expected impacts to the Lehigh Valley remain in question.

It took less than two weeks to fix operational issues at Kline’s Island Wastewater Treatment Plant on Union Street. Officials described the sewer odor as an ‘"earthy" or "rotten egg" smell but said it is not harmful to human health.

The average price for a gallon of gas in the Lehigh Valley was $3.87 this week. That's below the Pennsylvania average of $3.92 per gallon but up slightly more than 11 cents from last week, according to AAA.

The letter-writing campaign began Sept. 9. It is unclear how many emails city councilmembers have so far received.

Released Tuesday, results from Muhlenberg College Institute of Public Opinion’s National Surveys on Energy and the Environment show Americans want to prevent future global warming, and also believe adaptation to climate change will require major lifestyle changes.

The biggest differences between tropical and subtropical storms are in the way they form and in the broad impacts. A subtropical system could target the region this weekend.

It's going to be a wild and windy few days for the Lehigh Valley and the rest of the Mid-Atlantic region, forecasters say, with temperatures set to soar before a strong cold front arrives.

Brad Klein reviews the week’s astronomical highlights with Bethlehem’s "Backyard Astronomy Guy," Marty McGuire.

Temperatures will be a roller coaster this week, with Sunday's seasonably cool air giving way to a few days of spring-like temperatures but with a chance of rain.

Take a look at stories that ran throughout the week of which we are most proud, had a profound impact on readers or that you might want to look at again.

Even with temperatures set to surge next week, experts say Mid-March could see a pool of cold air spilling into the Lower 48, potentially unleashing cold, stormy conditions.

A bright meteor raced across the skies around 6:50 p.m. Wednesday, with people near the Lehigh Valley reporting the sighting.

More than 100 businesses, officials, organizations and environmental advocates statewide — including two from the Lehigh Valley — signed a letter to Shapiro arguing his economic development plan, “Pennsylvania Gets It Done,” fails to prioritize sustainable industries and instead doubles down on fossil fuels.

LANTA and UGI Energy Services have signed a three-year deal that will provide the transportation authority with compressed natural gas collected from landfills in eastern Pennsylvania.

The Lehigh Valley stands alone as the only major climate site in the area with above-average snowfall this winter, but the pattern says winter could be just about over.

Brad Klein reviews the week’s astronomical highlights with Bethlehem’s "Backyard Astronomy Guy," Marty McGuire.

The Lehigh Valley Planning Commission last week released a draft of its Priority Climate Action Plan, a document almost a year in the making aimed at tamping down the region’s carbon emissions and mitigating the effects of climate change.

The National Weather Service issued the warning Saturday afternoon for parts of Lehigh and Northampton counties, extending into Carbon County.