Environment & Science

People who stayed up late Sunday night were treated to an incredible display of the northern lights, which were visible in the Lehigh Valley.

The National Weather Service issued a severe thunderstorm watch for Lehigh, Northampton, Carbon, Monroe and several other eastern Pennsylvania counties.

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

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.

Forecasters now expect widespread snow totals of 12 to 18 inches across much of the region, with locally higher amounts possible. The warning replaces the earlier watch, signaling that severe winter weather is now considered imminent.

Lehigh County Coroner Dan Buglio announced that a 93-year-old Lower Macungie Township woman died outside her home of hypothermia. She is Lehigh County's first weather-related fatality of 2026.

Allentown declared a snow emergency ahead of Sunday's major winter storm. Enforcement efforts in the city will begin Saturday morning.

Residents of South Whitehall Township voiced their opposition to a proposed 5-million-square-foot data center near Parkland High School.

In a briefing package released early Thursday, the National Weather Service put the low end amount expected in the Lehigh Valley around 8 inches. But a “reasonable worst case” would see the area receive as much as 21 inches of snow.

EPAWA meteorologist Bobby Martrich is sounding the alarm on cuts at the federal level he says are quietly eroding the reliability of weather forecasts across the country, from national outlooks to the local forecasts residents rely on every day.

A community meeting on the city's Urban Forestry Master Plan is slated for Feb. 2 in chambers of City Council. Residents are invited to shared feedback there, as well as through a survey.

The funding, through the Department of Conservation and Natural Resources’ Bureau of Recreation and Conservation’s Community Conservation Partnerships Program, is aimed at protecting national resources and expanding outdoor access.

The developer behind the Easton Commerce Park project and Wilson Borough have filed a lawsuit against Easton's planning commission after it rejected its plans for a 1-million-square-foot warehouse on Wood Avenue.

Two 4-H state project ambassadors for expressive arts presented “Trash to Treasure — Recycling and the Art of Upcycling,” Tuesday at the PA Farm Show.

Easton was able to secure $1.25 million of grant funding in December 2025, supporting various projects including infrastructure, public safety and Easton's parks and festivals.

This week on Watching the Skies, Brad Klein reviews upcoming astronomical highlights this year with Bethlehem's "Backyard Astronomy Guy."