Environment & Science

PJM Interconnection, the regional grid operator headquartered in Valley Forge, issued a maximum generation alert and load management alert for Monday.

The first day of summer can be told by the sun's position, as well as the calendar.

Presented in partnership with the Nurture Nature Center, it’s the city’s first free Sustainability Movie Night, an effort organizers said aims to bring the community together for conservation education.

With the Lehigh Valley under an extreme heat warning next week, Allentown is offering free pool admission. Find out other ways to beat the heat.

The Delaware River was chosen as the commonwealth’s River of the Year. It was celebrated Wednesday with a festival.

Easton late last month became the third major city in the Lehigh Valley to seek certification through Bird Town Pennsylvania, an annual designation focused on community-based conservation.

Tick season is in full swing in the Lehigh Valley. In addition to blacklegged ticks, those most often associated with Lyme disease, the invasive Asian longhorned tick also calls the Valley home.

Spraying began 8 a.m. Tuesday. Black flies have been a recognized pest of humans and livestock in Pennsylvania since the 1970s.

The center’s Board of Trustees said it will form a search committee this summer to begin the process of selecting Erickson’s successor, with the goal to announce a new CEO by spring 2026.

Pocono Wildlife Rehabilitation and Education Center has a new fawn hotline, where a fawn specialist will help callers quickly determine if a newly found fawn needs help, or needs to be left alone.

Heavy rainfall could occur into the evening and overnight.

A July 13 media release stated that the Low Energy Evaporative Fractionation System will employ “an advanced foam fractionation process and proprietary techniques” to treat landfill byproducts.

Officials from Lehigh and Northampton counties are slated to gather at 11 a.m. Aug. 2 at 100 W. Lehigh St. in Bethlehem for a news conference focused on the new project, “Lehigh Valley Breathes.”

The average price for a gallon of gas in Pennsylvania is now 10 cents higher this week, and experts say the pain at the pump is likely to continue.

The Lehigh Valley is preparing for its first official heat wave of the year, with a stretch of 90°+ degree temperatures expected. A heat advisory is in effect from 11 a.m. Thursday to 10 p.m. Friday.

Showers and thunderstorms, possibly severe are possible Tuesday evening, alerts from the Weather Prediction Center have warned.

The Federal Emergency Management Agency is hosting a first-of-its-kind summit this week in Philadelphia focused on those aged 65 and older.

Those with lingering COVID-19 symptoms are part of the group of people who should stay indoors when smoke from the Canadian wildfires is particularly bad, says a Lehigh Valley doctor. He says people living with any type of lung problem should be aware of what’s happening outside.

The City of Allentown is looking for artists to paint murals on storm inlets as part of its Go with the Flow Inlet Mural Painting Contest.

The third week of July is the warmest week of the year based on climatological norms, and the Lehigh Valley forecast fits that trend. Excessive heat headlines are likely, the weather service said.

Easton's conservation manager on Wednesday evening held a basic tree care and proper pruning course at Easton’s microforest. Here's what he taught.

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.