Environment & Science

With the Lehigh Valley under an extreme heat warning through Wednesday, area doctors are urging residents to keep hydrated and stay cool.

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.

Wilson Area School District is set to host their second Wilson Family Computer Science Night, showcasing fun and hands-on innovative tech for students up to grade eight.

Jared Isaacman, a tech billionaire who lives in the Lehigh Valley and conducted the first private spacewalk, was nominated by President-elect Donald Trump on Wednesday to lead NASA.

The Unidos Foundation was one of 12 community organizations across Pennsylvania to receive the grant. Money is earmarked to ensure that historically marginalized and underserved communities have access to information and resources about environmental protection.

More than a year after the federal government held its first hearing on unidentified anomalous phenomena, or UAPs, two more were held within a week in November.

The Lehigh Valley is expected to see snow showers this week. Starting Tuesday evening, snow showers will move through the area, with more impactful showers Wednesday night through Thursday, including high winds.

Lehigh Township volunteer firefighters shared the obstacles they faced fighting a 600-acre fire that erupted on Blue Mountain. Almost a month later, it's still not technically out.

A NASA robotic mission that is exploring the inner reaches of our solar system will literally ‘touch the Sun’ on Christmas Eve.

The Lehigh Valley is in a 9-inch rain shortfall. The prolonged dry spell has raised concerns about the longevity of fresh-cut Christmas trees this year. And, it's thinning out the trees planted this year to grow for future holiday seasons.

The township's Shade Tree Commission was awarded 15 trees from a statewide nonprofit dedicated to improving the tree canopy in urban areas.

Listings will include risks for flood, wildfire, wind, heat and air quality, as well as interactive maps and insurance requirements.

Highs in the 30s and lows mainly in the 20s are forecast for the weekend and well into next week, which could be jarring on the heels of one our warmest Novembers on record.

With no quick cure for the fast-moving, but slow-to-kill disease, experts said American beech trees could be functionally extinct throughout the state within 10 to 15 years.