Event Type : Virtual Program

Freshwater mussels are considered keystone species in aquatic communities around the world. They provide ecosystem services, including water filtration and streambed stabilization, which help maintain the health of our streams, rivers, and lakes. Unfortunately, we are at risk of losing this vital resource, as 74% of mussel species in North America are recognized as endangered, threatened, or of special concern.

Jordan Allison, Fisheries Biologist with the Pennsylvania Fish & Boat Commission, will discuss freshwater mussel diversity, life history, and ecology, as well as provide a summary of ongoing species recovery efforts in the West Branch Susquehanna River.

Presentations begin at 12:15 PM and are followed by a question-and-answer session. Registration is required to attend the free, virtual program. Click here to register now.

The death of prehistoric organisms is captured in the geologic record and these remains play an important role in geology. Aaron Bierly, senior geoscientist with the Bureau of Geological Survey, will share how scientists learn about ancient environments, as well as how the corpses of prehistoric life are utilized in our society today.

Topics discussed in the program will include fossilization, the types of rocks that hold fossil remains, fossils that capture the exact moment of death, and how those fossiliferous rocks are utilized in our society.

Presentations begin at 12:15 PM and are followed by a question-and-answer session. Registration is required to attend the free, virtual program. Click here to register now.

Histories written from the late 19th through the 20th centuries have been the basis of our understanding of the events surrounding General George Washington’s acclaimed crossing of the Delaware River on Christmas night, 1776. In the 21st century academic historians have continued to search the documentary record. In preparation for the nation’s Semiquincentennial, new groundbreaking research helps us clarify longstanding questions and identify the people who contributed to the crossing that night.

Join Washington Crossing Historic Park’s Museum Curator, Kimberly McCarty, for a presentation about the army’s encampment in Bucks County, the crossing, and the untold stories of the people who took part.

Presentations begin at 12:15 PM and are followed by a question-and-answer session. Registration is required to attend the free, virtual program. Click here to register now.