Environment & Science

The Lehigh Valley is locked in a prolonged period of chilly and unsettled weather, and forecasters say a coastal storm could bring significant and much-needed rain for the weekend.

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.

Easton Area Neighborhood Centers Inc. and the Seed Farm in Upper Milford Township are getting $50,000 and $27,754 respectively to put toward their greenhouses.

Independence and Bailey’s Island are now state forest lands.

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Lehigh University and St. Luke's University Health Network are working together to create a biomaterial that would help regenerate cartilage. The project is funded by the National Institutes of Health.

Punxsutawney Phil was pulled from his tree stump at dawn on Thursday to 'predict' six more weeks of winter. But there's plenty of evidence that won't be the case in the Lehigh Valley and throughout the region.

Our daily list of useful information, chosen to inform and enhance your day, includes news you can use and then some!

“It's always remarkable to me to see even a company that we've all grown up with has to constantly change and adapt – not just with regard to sources of energy, but with regard to the process," Casey said.

A mother bear and her cubs are nestled under the deck of a Pike County home, and you can peek in on them 24/7. The camera is expected to be up until late March or early April, when the bears leave the den.

Based on history alone, fans of winter should be optimistic. But El Niño doesn't just affect one season, and scientists warn its possible return is a major cause for concern. Here's what we know so far.

The Pennsylvania Department of Environmental Protection lifted a drought watch for five counties, including Northampton County.

The rule was published earlier this month and applies to all 3,117 water systems. Both chemicals belong to the group of perfluoroalkyl and polyfluoroalkyl substances, known collectively as PFAS, which are used in products such as nonstick cookware, carpets, firefighting foam and fast-food wrappers.

A winter weather advisory remains in effect until 4 p.m. Wednesday, with snow coming down in a predicted burst across much of the Lehigh Valley.