Environment & Science

Two Allegiant flights slated for Wednesday afternoon have been canceled. Forecasters say the Category 3 story is 'unprecedented.'

More than 2,600 acres on 35 farms in 18 counties across the commonwealth were preserved. Here are the Lehigh Valley farms now safe from development.

The yet-to-be-named calf was born Aug. 4 and is the tenth oryx calf born at the zoo since 2014.

As of Aug. 22, more than 300 raptors were counted during the Berks County sanctuary's annual autumn count. The count runs through Dec. 15.

Beginning Wednesday night, a super blue moon will rise and will be the third-largest moon to date this year, leaving one more supermoon in 2023.

The Pennsylvania Game Commission's Elk Cam gives viewers a close-up look at elk as their activity is about to ramp up with the bugling season. It features a rotating, zooming camera and natural sound.

Three studies show smoke from Canadian wildfires led to a spike in people with asthma visiting emergency rooms in the United States. One study collected data from about 4,000 U.S. hospitals.

The Weather Prediction Center said one inch per hour rainfall rates are possible, as well as “precipitation totals on the order of 1 to 2 plus inches through the period.”

The middle of August is prime time for ragweed pollen production, according to the state Department of Environmental Protection — and that’s exactly what the numbers are showing in the Lehigh Valley.

It is now certain, forecasters say, that the Lehigh Valley will not see a 90-degree day in the month of August. Not with a pool of Canadian air set to descend on the region.

If you don't like the Lehigh Valley's weather, just wait a minute. The next few days will offer a little something for everyone.

The Lehigh Valley is under a code red alert. Here's what you should know about Thursday's municipal and school district activity cancellations and reopenings.

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 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.

Any fires that develop may quickly get out of control and become difficult to contain, the National Weather Service said in a red flag warning in effect for the area until 8 p.m.