Environment & Science

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 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.

Messinger and South Main streets in Bangor turned into a waterway after downpours hit early Sunday. Said one resident: “By the grace of God we didn’t lose power and everyone is OK. That is the most important thing."

The entire Lehigh Valley will remain under a flood watch through Sunday after another round of severe storms hammered the region. Tonight's Heritage Day fireworks show in Easton is postponed again, the city announced. Bushkill Park in Forks Township and parts of the Slate Belt were flooded.

The disease, a relatively new and deadly threat to the American beech, has few treatment options and no known cure.

Astronaut John Shoffner stopped by Crayola Experience in Easton on Friday, July 14 to discuss his voyage to the International Space Station and answer kids' questions about the cosmos.

The Lehigh Valley has measured 7.47 inches of rain since June 1. Almost half of it has come this month, and we'll add on to that number in the coming days.

The Community and The Arts Clean Up aims to combine community service and engagement through a tournament-style competition – with prizes for the team that fills the most trash bags – followed by a gathering with live music and food.

Severe storms during the summer are very difficult to predict. That's evident in dueling forecasts Thursday for the Lehigh Valley.

Lafayette College in late May submitted a replanting plan to the city after officials threatened to stop work when 46 trees were cleared from the slope without approval. It's unclear whether the plans have been approved.

From 8:30 a.m. to 3:30 p.m. on Friday, July 21, the Rodale Institute’s headquarters at 611 Siegfriedale Road in Kutztown will be open to the public for its annual field day.

The newest proposal, one involving 848.47 acres near the landfill, may also receive a public hearing at a later date. The possibility to rezone 275.7 acres will see discussion on Aug. 30 at 9 a.m.

Mostly sunny skies on Tuesday may be dimmed slightly as another plume of wildfire smoke drifts over the region, the National Weather Service warned.

Storms pounded eastern Pennsylvania, including the Lehigh Valley, with widespread flooding before the heavy rainfall pushed to the east and gradually weakened overnight.