Environment & Science

Mayors in Allentown, Bethlehem and Easton are coming together to fight against worsening climate change and strengthen sustainability across the region. Two of the three cities have their own climate action plans.

There are plenty of ways to celebrate Earth Day on Saturday, April 22, in the Lehigh Valley.

The first new building on Muhlenberg’s campus in more than a decade, the Fahy Commons for Public Engagement and Innovation, 2400 W. Chew St., opened in January. The 20,000-square-foot, three-floor building cost $13.2 million and is one of the first buildings in the world expected to achieve a rigorous sustainability certification for buildings that give more than they take.

A few strong to severe thunderstorms are possible in the region on Saturday, with the main threat being damaging wind gusts, according to the National Weather Service.

Puerto Rico's electrical grid has been devastated by hurricanes due to worsening climate change. Ruth Santiago, a Bethlehem native, has a solution.

Swarms of non-biting midge flies last week were spotted in Bethlehem. LehighValleyNews.com spoke with Marten Edwards, chair of Muhlenberg College's biology department, to find out more about the insects.

For the first time, the Lehigh River was included on American Rivers' list of most endangered rivers in the country. Environmentalists point to a proliferation of warehouses and distribution centers for putting the river at risk.

“Twitter is now limiting automated tweets and as a result this account can no longer post all watches/warnings/advisories as they are issued,” a tweet from NWS Mount Holly said Saturday morning. Things seemingly changed Saturday night.

Like the rest of the country, Pennsylvania has a litter problem. While state and local officials work to mitigate the issue, residents are rolling up their sleeves and doing the work themselves.

In 2025, LehighValleyNews.com readers gravitated toward stories that reflected mounting economic pressure, public safety concerns, environmental uncertainty and moments of sharp civic tension.

“If it does come down in any area, which most areas will see at least some snow showers from it, it is going to stick everywhere," one local forecaster said.

Weather was the main culprit for thousands of power outages that spanned the region early Tuesday.

Beginning at 10 a.m. Tuesday, Jan. 6, 2026, the office will transition away from the traditional, chronological structure of the area forecast discussion.

This week, a suggestion for how to enjoy the view from the International Space Station, without the expense and arduous training needed to become an astronaut.

For the first time, all three of the Lehigh Valley’s cities have a sustainability manager or coordinator, a role dedicated to sustainability initiatives and fighting the worsening impacts of climate change.

Keith Lampman-Perlman, who often goes by “KLP,” recently was appointed as the 176-year-old cemetery’s new executive director, a role focused on community engagement, preservation and fundraising.

After days of updates, forecasters say the overall message is not how much snow or sleet could fall, but how difficult travel could become, especially Friday night.

There's a possible scenario emerging Friday in which parts of the Lehigh Valley could end up with 6 inches of snow, and some could end up with a lot more sleet or even freezing rain.

A new app developed by Moravian Academy students aimed at detecting and warning developers about waste runoff has secured over $10,000 in funding from successful pitch presentations.

Asked Santa for a white Christmas? Snow may arrive a day late in the Lehigh Valley, forecasters say.

This week marks the start of astronomical winter which began with the December solstice, Sunday morning just after 10 a.m. EST.