The National Science Foundation (NSF) has put a cork in its grantmaking pipeline after billionaire Elon Musk’s Department of Government Efficiency (DOGE) set up shop at the agency this week. Effective today, sources tell Science, NSF’s division of grants and awards is returning all grant proposals previously approved for funding and awaiting final signoff to the program officers who oversaw the initial review. In the meantime, according to those sources, NSF will not make any new awards. The NSF...