Environment & Science

As of Monday afternoon, mile markers 94.2-97.13 of the D&L Trail in East Penn Township remain closed because of a sinkhole.

The state Department of Environmental Protection will hold a public hearing from 6 to 9:30 p.m. Oct. 28 in Bethlehem to take public testimony about Keystone Cement Co.’s hazardous waste permit renewal application.

A look at NASA's latest space mission that could launch in early October.

Northampton County’s annual Household Hazardous Waste Drop-Off Event was held Saturday. More than 1,700 residents registered.

What can the Lehigh Valley expect as we head into meteorological fall? Experts have given their long-range outlooks for both temperatures and precipitation, and also weighed in on La Niña.

State officials on Thursday gathered at a Lancaster County dairy to announce the theme of the 2025 farm show. The farm show runs from Jan. 4 through Jan. 11 in Harrisburg.

The commonwealth's six-week leaf-peeping season has begun. Here's when the Lehigh Valley can expect peak colors.

The industrial and transportation sectors are responsible for the largest share of the Valley's greenhouse gas emissions. The findings will form the foundation the next project, a regional Comprehensive Climate Action Plan.

Work is underway to restore a half-mile section of the Monocacy Creek that runs through the Archibald Johnston Conservation Area. Officials aim to improve the stream’s health by restoring the natural flow.

Brad Klein reviews the week’s astronomical highlights with Bethlehem’s ‘Backyard Astronomy Guy,’ Marty McGuire. This week, they talk about the upcoming Lehigh Valley Space Fest.

Even with several days of rain, the Lehigh Valley remains well below average in long term levels of precipitation. Here's how the rest of the month could shape up.

Videos posted to the Facebook group Slate Belt Chatter show a funnel cloud rotating and descending toward the ground. The weather service said a storm damage assessment will be conducted and more details provided later in the week.

Projects ranged from initiatives aimed at lowering food waste to renewable energy. When complete, the city will be the third of the Lehigh Valley’s major cities to publish a climate action plan.

The annual Envirothon is essentially a scholastic scrimmage for environmental science. Two Lehigh Valley teams have advanced to the state competition.

The so-called "morning star" is brightly visible for the remainder of spring, and easy to spot in the eastern sky just before sunrise.

The tool and seed library at Bethlehem Area Public Library's South Side branch, 400 Webster St., includes free seeds for all. Patrons can check out tools for a week with a library card.

“An isolated tornado is not entirely out of the question," the National Weather Service said of Saturday's threat. But non-English speakers may not be aware of warnings for severe weather.

The Dorothy Rider Pool Wildlife Sanctuary is closed to the public following a Tuesday bridge collapse. Wildlands Conservancy has launched a website where updates will be posted.

Excessive rainfall during drought can trigger flash flooding, forecasters say. The concern is that prolonged dry conditions can make the soil hydrophobic, meaning it repels water.

Terry Hart, of Lower Saucon Township, is a NASA astronaut who flew aboard the space shuttle Challenger in 1984. Today he's a professor in Lehigh University's Department of Mechanical Engineering, mentoring a new generation heading into the field of science and technology.

Led by the Greater Lehigh Valley Chamber of Commerce and the Sustainable Energy Fund, The Lehigh Valley Sustainability Summit drew economic and industry leaders from across the region to engage on topics like waste reduction, energy and economic growth.

The American Lung Association’s “State of the Air” report shows air quality got worse in the Lehigh Valley. The report was released Wednesday.