Environment & Science

Temperatures overnight Wednesday into Thursday could dip into the mid 30s in the Lehigh Valley, forecasters say.

The Borough of Emmaus has chosen to take the steps to treat its own water supply after spending over a year seeking a solution to the municipality's PFAS contamination issue

Like all the other major cities in the Lehigh Valley, Allentown is a patchwork of neighborhoods, some with good tree cover and some without any. Officials plan to use a mapping tool as a starting point to make planting trees city-wide more equitable.

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.

The mayors of Allentown, Bethlehem and Easton will participate in group bike rides for Lehigh Valley Bike to Work Week.

In its third year, Spring on the Farm is scheduled for 11 a.m. to 3 p.m. on Saturday. The free event includes a seedling sale, as well as other local vendors.

A program that started at Easton's Nurture Nature Center to protect area watersheds has already garnered state recognition. Now it's expanding.

A Code Orange alert means the air is expected to be unhealthy for sensitive groups, such as young children and older adults with respiratory conditions.

Lehigh Valley planners held a public meeting Thursday at Allentown’s Bucky Boyle Park, where residents raised some safety concerns about the project.

The EPA on Thursday announced a new proposal that would set new guidelines for power plants, requiring “ambitious reductions” in carbon pollution. A Pennsylvania environmental group calls the move a "big step in the right direction.”

The first winner of the Good Farmer Award U.S. was announced on Earth Day. The competition sought beginner farmers who exemplify sustainable farming practices.

A Lehigh County resident's collection of more than 150 conifers, assembled over decades, will soon be moved to the Louise Moore Park arboretum in Lower Nazareth Township.

The Lyrid meteor shower is at its peak this week. Looking to catch a shooting star? Brad Klein and Marty McGuire talk about prime viewing times on this week's Watching the Skies.

The exhibit, which calls itself North America’s most popular interactive dinosaur event, will return to Allentown Fairgrounds Agri-Plex from June 13-15.

Easton's new sustainability coordinator has launched an email for residents to direct their ideas and concerns about sustainability in the city.

The 3rd Annual No Planet B Jamboree will be at 1-4 p.m. Saturday, April 19. For the first time, it will be at the ArtsQuest Town Square Stage on the SteelStacks campus.

Allentown Mayor Matt Tuerk, along with local legislators and officials, on Thursday morning held a news conference focused on energy efficient programs frozen due to cuts enacted by President Donald Trump and the U.S. Department of Government Efficiency.

Brandon Sullivan recently was hired as Easton's first sustainability coordinator. It's the third of the Lehigh Valley's major cities to carve out a position dedicated to mitigating the effects of climate change.

It's Earth Month, and there are many opportunities to get involved. Here are the events scheduled in the Lehigh Valley.

Allentown's climate action plan survey is live. When completed, the city will be the third of the Lehigh Valley’s major cities to create a climate action plan.

It is the second time the township has been awarded trees through TreePennsylvania’s Bare Root Tree grant program. The statewide nonprofit supports urban and community forestry to increase tree coverage.

This week on Watching the Skies, learn how to spot several stars and bright celestial objects in the sky like Mars and Jupiter.