The U.S. National Science Foundation (NSF) is offering a federal grant opportunity titled "Paleoclimate," aimed at advancing research in understanding long-term climate variability and trends. The program seeks proposals that address scientific uncertainties related to past climate variability, including observational and modeling studies, as well as the development of new paleoclimate proxies and records. This initiative is crucial for establishing a baseline for current climate variability and informing future climate projections, with a particular emphasis on studies related to past regional and seasonal climate and climate forcing mechanisms. Proposals can be submitted at any time, and interested researchers are encouraged to contact the NSF for guidance on proposal suitability. For further details, applicants can reach out via email at grantsgovsupport@nsf.gov or visit the NSF program description at http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=12727.