Is the rare Pennsylvania hawthorn ready for its moment in the sun?
Native hawthorn trees, Crataegus pennsylvanica, have a thorny history in Pennsylvania.
History
About 250 years ago, America’s Founding Fathers took on one of the nation’s first invasive species
The invasive Hessian fly spurred suspicions of biological warfare, threatened the new nation’s economy and inspired the nation’s first citizen science project.
What’s special about the Conestoga, Pa.’s 2026 River of the Year
The Conestoga River flows through downtown Lancaster, suburbs and farmland. Polluted by sewage and agricultural runoff, the river is also popular for recreation.
Effort to preserve history of abandoned coal mining town in Blair County
Volunteers are asking for help to restore Glen White, an abandoned coal mining town near the Horseshoe Curve, and turn it into a historical attraction.
Hellbenders share spotlight with Abraham Lincoln at new nature preserve
A new preserve in Ohio is named for the salamanders that live there also highlights the history of early American railroads.
Could swamp-ifying northwest Ohio help curb toxic algal blooms?
In an environmental memoir, Ohio native Patrick Wensink traces northwest Ohio’s toxic algal bloom problems back to its swampy roots.
Artifact or trash? Thoughts on what we leave behind.
A writer has collected found items on her Westmoreland County farm for decades.
View from the Mon: Industry, historical pollution and prosperity
Ron Baraff of Rivers of Steel says without the Monongahela River, the Pittsburgh region would not have developed into an industrial power.
In Michael Mann’s book, Earth’s climate history shows us there’s still time to act
"Our Fragile Moment" takes lessons from the paleoclimate record to help us survive the climate crisis.
Study Finds Fewer Greenspaces in Historically Redlined Cities
Researchers found that urban neighborhoods lack greenspace today because of a specific government policy enacted over 80 years ago.
