Science

The Delaware River Basin Commission has a plan for situations like this, and could step up its efforts to repel the salt front if conditions worsen.

An arborist offers his top tips for protecting trees as Philadelphia’s record-breaking dry spell continues.

We explore the field of biomimicry, and how everyone from architects to engineers to medical researchers are drawing inspiration from nature.

A new study shows the soda tax made a small difference in slowing down weight gain, which researchers argue is still important.

The funding is part of $3 billion for ports nationwide to tackle climate change and air pollution.

Trump said he would stop offshore wind on “day one” should he win the election. The wind industry worries about delays to permits and proponents worry about jobs.

The state's Department of Environmental Protection is investigating a potential case of tampering with water testing samples that showed high mercury levels in Upper Township.

Whether it be from damaging weather conditions, diseases, fungi or insect infestations, a sick or dying tree can be dangerous — and hard to spot.

Hankin Group aims to restore the floodplain along the Lionville Run in Exton, Chester County.

Election security experts warn that underfunding and a lack of expertise in the field could threaten election integrity.

Ahead of the election, we look at how politics is affecting everything from health care to scientific progress.

The money will help the utility improve the safety of its distribution lines and reduce climate-warming emissions.

Municipalities must locate and replace lead pipes over the next decade. Here’s what you need to know.

Fear is about survival, but it can also feel fun. We explore our complicated relationship with fear.

Archaeologists in Denmark have unearthed a Viking Age burial ground containing some 50 “exceptionally well-preserved” skeletons.