Exotic bush honeysuckles, originally native to parts of Eurasia—including Japan, China, Korea, Turkey, and southern Russia—were introduced to North America in the late 19th and early 20th centuries. Initially, these shrubs were sought as ornamentals, used for erosion control, or chosen to...

Mystery tends to surround animals that are most active at night. While scientists are constantly learning more about the adaptations and behaviors of nocturnal creatures, the majority of us are not in-tune with the rhythms of the night, giving an air of intrigue to the critters that feed, fly,...

In Southern Chester County, along Route 82, there is an agrarian oasis. The landscape undulates, with hay growing on rolling hillsides and copses of woods dotting the viewshed. Small streams meander through the lowlands, carrying some of the highest quality water in the region to the Brandywine...

The construction of low head dams—which allow water to flow over their entire top—played an important role in the settlement, development, and growth of our Nation, especially in southeastern Pennsylvania. These dams harnessed the power of water by storing a large volume (or head) of water...