With NSF support, the NCAR-Wyoming Supercomputer Center (NWSC) in Cheyenne, Wyo., houses high performance computers, mass storage (data archival) systems and related systems and infrastructure. The center is operated by the National Center for Atmospheric Research (NCAR). The center’s flagship supercomputer, known as Yellowstone, has the ability to work at 1.5 petaflops, equal to 1.5 quadrillion (a million billion) mathematical operations per second. Researchers use the supercomputer to advance scientific understanding of climate change, severe weather, air quality, and other atmospheric and geosciences challenges. This is a view of some of Yellowstone’s 100 racks. Find out more about NSWC at www.nsf.gov/news/news_summ.jsp?cntn_id=125708 .