Environment & Science

The latest map issued by the U.S. Drought Monitor shows a majority of Pennsylvania — including most of the Lehigh Valley — in a moderate drought.

Air quality in the Lehigh Valley is expected to be a little bit better on Thursday, though we're back under a code red alert for the second straight day.

As smoke from the Canadian wildfires continues to shroud the skies of the Lehigh Valley, air purifiers have become a hot-ticket item at just about every retailer.

Lafayette on May 26 submitted plans to replant College Hill after it was deforested for a $1.2 million walkway project. Here's the plan.

The Lehigh Valley is under a code red air quality alert in effect until midnight due to Canadian wildfires. Here are the latest updates on the smoke.

The air quality in Allentown, Bethlehem and Easton is so bad, it’s the equivalent of smoking more than 14 cigarettes.

Smoke from wildfires in Canada can be seen and smelled in much of the northeast, including the Lehigh Valley. Local pulmonologists are weighing in with what to do to avoid too much exposure.

The Lehigh Valley is under a code red air quality alert in effect until midnight.

The National Weather Service says thick smoke associated with wildfires in Canada is moving into parts of Pennsylvania and New Jersey.

Allentown Fire Department is warning against any outdoor fires due to dry conditions and elevated winds as a red flag warning continues for the region.

For the first time, all three of the Lehigh Valley’s cities have a sustainability manager or coordinator, a role dedicated to sustainability initiatives and fighting the worsening impacts of climate change.

Keith Lampman-Perlman, who often goes by “KLP,” recently was appointed as the 176-year-old cemetery’s new executive director, a role focused on community engagement, preservation and fundraising.

After days of updates, forecasters say the overall message is not how much snow or sleet could fall, but how difficult travel could become, especially Friday night.

There's a possible scenario emerging Friday in which parts of the Lehigh Valley could end up with 6 inches of snow, and some could end up with a lot more sleet or even freezing rain.

A new app developed by Moravian Academy students aimed at detecting and warning developers about waste runoff has secured over $10,000 in funding from successful pitch presentations.

Asked Santa for a white Christmas? Snow may arrive a day late in the Lehigh Valley, forecasters say.

This week marks the start of astronomical winter which began with the December solstice, Sunday morning just after 10 a.m. EST.

Already above its December snowfall average, the Lehigh Valley is expected to add a little more to that total this week.

While the penguins were taken off exhibit, barnyard birds and waterfowl at Lehigh Valley Zoo were shuffled to different enclosures so visitors could still view them.

Wind Gap will get a $130,000 state grant to help fund a new, larger pavilion at the borough's municipal park, officials announced Thursday.

Thousands were in the dark in Lehigh and Northampton counties as thunder rumbled and lighting flashed Friday afternoon in parts of the Lehigh Valley. Wind gusts reached more than 50 mph.

Strong winds sweeping through the Lehigh Valley early Friday already were knocking out power to thousands of residents, with outages expected to climb as a powerful cold front moves through the region.