Science

The largest refiner on the east coast says its operations will not be disrupted by its Chapter 11 bankruptcy proceedings aimed at restructuring its debt.

Ornithologist Drew Lanham says wilderness offers beauty and freedom — but also holds our painful past.

Continue your lunation observations: The first quarter moon is on Wednesday Jan. 24. Here’s what to look for: a. The line th ...

Treatment plants that handle conventional oil and gas waste water are causing a buildup of radioactive materials at the bottom of three Western Pennsylvania waterways.

Wildlife photographer Nick Nichols remembers a close call with a tigress.

We reintroduce animals to their native habitat as part of an impulse to re-create “wilderness” — a place untouched by man. The result is more like the feeling of wilderness.

A hidden world of pathways leads wild animals safely across busy roads, keeping ecosystems connected even as human use fragments and disturbs them.

Since the 1950s, a timber company has used conservation-driven logging to balance productive use and wild forests.

There's no way to predict what strain of the shape-shifting flu virus could trigger another pandemic or, given modern medical tools, how bad it might be.