Systematics and Evolution

The Center for Systematic Biology and Evolution cares for and studies over 18 million specimens of plants and animals, and conducts research in systematics, ecology, evolution, and paleontology.

Environmental Research

The Patrick Center for Environmental Research has been dedicated to understanding, protecting, and restoring the health of watersheds since 1947.


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From the Field

Delaware River Watershed Initiative

The Delaware River Watershed Initiative (DRWI) is an innovative new approach to grant-making and environmental stewardship funded by the William Penn Foundation. The DRWI is targeting subwatersheds to restore degraded ecological conditions and to protect areas that have high ecological value. Learn more.