The National Park Service (NPS) is inviting applications for Master Cooperative Agreements under the Cooperative Ecosystem Studies Units (CESU) network, aimed at enhancing partnerships for multidisciplinary research and educational activities related to national parks. Eligible applicants must be partners within the CESU network, which includes a diverse consortium of federal agencies, academic institutions, and conservation organizations, and the program seeks to generate usable knowledge for informed decision-making while promoting professional development for federal scientists and resource managers. This initiative is crucial for strengthening environmental stewardship and ensuring the integrity of national park resources through collaborative research efforts. Interested parties can submit proposals anytime until the closing date of December 31, 2027, with funding expected to range between $30 million and $40 million annually, and inquiries can be directed to Melissa Jacobi at melissa_a_jacobi@nps.gov.