Environment & Science

Officials from the state Department of Environmental Protection issued a Code Red Air Quality Action Day for all of Pennsylvania, including the Lehigh Valley.

A tornado warning was issued in the Martins Creek area of Northampton County on Monday afternoon as severe storms moved through. On Tuesday, the National Weather Service confirmed a twister had reached the ground.

Officials gathered at The Waterfront to highlight the Environmental Protection Agency’s $5 billion climate pollution reduction grants program.

The region had been in drought and running a deficit in the rain column, but things changed in a big way on Monday for some parts of the Lehigh Valley. Now, more heavy rainfall is on the way.

The council voted 3-2, approving the preparation of a new landfill ordinance, all while the original proposal is under court review.

Storms today could bring damaging winds, large hail, flash flooding or even a tornado or two across the region. The Lehigh Valley is now under an enhanced risk for severe weather.

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.

Lehigh Valley Zoo officials this week publicly announced the birth of a bison calf, adding to the population boom of new animals at the zoo this year.

The greater potential impact with heavier showers and thunderstorms looks to be Friday and Monday, meteorologists say, with scattered storms over the weekend.

Pools around the Lehigh Valley participated in the World's Largest Swim Lesson with free sessions Thursday. Kids jumped in the wave pool at Dorney Park and Cedar Beach Pool in Allentown.

It’s expected to be a busy day for power crews in the Lehigh Valley with a wind advisory in place until 8 p.m., northwest winds of 20 to 30 mph and gusts up to 55 mph. Met-Ed and PPL Electric Utilities were reporting scattered outages.

The 120-acre park in Northampton County boasts more than 100 species of trees and shrubs from around the world. "What's unique is it's in a public park setting. It's run by county park staff, not a nonprofit or not a for-profit entity,” the superintendent said.

The clocks went forward, but the weather turned back a season on Sunday as blinding snow squalls pushed through the Lehigh Valley. A wind advisory remains in effect Monday.

Brad Klein reviews the week’s astronomical highlights with Bethlehem’s "Backyard Astronomy Guy," Marty McGuire.

Dozens of students from across Pennsylvania will descend on Saucon Valley Middle School’s gymnasium for FIRST Tech Challenge’s robotics state championship, including two teams from the Lehigh Valley.

Pennsylvania’s maple sugaring season is well underway. At the Monroe County Conservation District’s Singing Hemlock Sugar Shack, educators guided visitors through the history of maple syrup production.

A flood watch remains in effect from 1 p.m. Saturday through Sunday evening for a large swath of the region, including Lehigh and Northampton counties.

Forecasters say a weekend storm will not only bring active weather, windy conditions Sunday and Monday are likely to bring isolated instances of tree damage and power outages to the Lehigh Valley.

Farmers say that the final offer for a property doesn’t account for fertile soil or product reliability. Plus, it doesn't accurately reflect the financial burden of moving to a new place.

Advocates and officials across Pennsylvania have signaled their support the new standards for fine particle pollution, also called soot or PM 2.5. However, federal officials don’t anticipate communities will meet the standard for almost a decade.

Norfolk Southern crews remained at the derailment site along the Lehigh River in Lower Saucon Township. The company released no details on what the trains were hauling or where they were going.

More than 200 years after the sanctuary was built, church leaders are working to make its heating and cooling more sustainable. While work is already underway, the oldest Moravian Church in North America still needs funding.