The National Science Foundation (NSF) Mid-scale Research Infrastructure (Mid-scale RI) Big Idea is intended to provide an agile, Foundation-wide process to fund experimental research capabilities in the mid-scale range ($6 million to $100 million), between the Major Research Instrumentation (MRI) and Major Facilities thresholds. Recently, Solicitation NSF 21-537 for the Mid-scale RI-2 program (total project cost of $20 million to under read more Funding Opportunity: National Science Foundation “Big Idea”