Environment & Science

Officials at Jacobsburg Environmental Education Center on Wednesday held their annual "Monarch Madness" tagging event. Four male and two female monarchs were tagged.

Just days away from the official start of fall, forecasters say the Lehigh Valley will see a long stretch of dry weather and seasonal temperatures ahead.

Residents can anticipate a flood watch in effect for a significant portion of the area Tuesday night and throughout Wednesday, as heavy rainfall from showers and thunderstorms is expected.

Leaf-peeper season is right around the corner. Here's when to be on the lookout for pops of brilliant yellows, oranges and reds across the landscape.

Kathleen Covalt, who teaches online classes through Northampton Community College for adults interested in learning about unidentified anomalous phenomena, or UAPs, said there's hope for future disclosures.

A stalled front will take a parting shot at the Lehigh Valley on Monday, bringing additional showers, thunderstorms and possible downpours, forecasters say.

Sunday could be mostly a washout, with showers and the potential for heavy rainfall in the forecast throughout the day. Things are looking up, though, for later in the week.

The 17-year-old Allentown Central Catholic senior has been monitoring the creek's surface lead concentrations, and plans to continue researching.

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.

Easton City residents can recycle their old, outdated electronics and appliances at 500 Bushkill Drive this Saturday. Most items can be recycled for free, while some others require a small fee.

A tropical system that was officially named Ophelia on Friday will drench the East Coast this weekend, including the Lehigh Valley, officials said.

The free festival runs from 10 a.m. to 3 p.m. at the center. The schedule includes nature walks, live animal presentations, monarch butterfly tagging, music and more.

Northampton County and its conservation district appear poised to split after a County Council committee meeting Wednesday showed deep distrust between them

Lehigh Valley Breathes, a Valley-wide effort, aims to measure air quality. From the collected data, officials said they will make recommendations for improvements.

It’s becoming increasingly probable that a subtropical storm develops off the Southeast coast this weekend, forecasters say, but expected impacts to the Lehigh Valley remain in question.

It took less than two weeks to fix operational issues at Kline’s Island Wastewater Treatment Plant on Union Street. Officials described the sewer odor as an ‘"earthy" or "rotten egg" smell but said it is not harmful to human health.

The average price for a gallon of gas in the Lehigh Valley was $3.87 this week. That's below the Pennsylvania average of $3.92 per gallon but up slightly more than 11 cents from last week, according to AAA.

The letter-writing campaign began Sept. 9. It is unclear how many emails city councilmembers have so far received.

Released Tuesday, results from Muhlenberg College Institute of Public Opinion’s National Surveys on Energy and the Environment show Americans want to prevent future global warming, and also believe adaptation to climate change will require major lifestyle changes.

The biggest differences between tropical and subtropical storms are in the way they form and in the broad impacts. A subtropical system could target the region this weekend.

A heat map generated from PennDOT crash statistics shows a high rate of collisions involving deer and vehicles — the Lehigh Valley included. Pennsylvania also ranked No. 3 overall for the likelihood of having an animal-vehicle collision.

Several Lehigh Valley residents reported witnessing a string of lights in the sky in the Allentown and Bethlehem areas on Saturday night, Sept. 16.