Catherine H. Stephens joined The Museum of Modern Art in October 2021 and is the Sally and Michael Gordon Conservation Scientist in the David Booth Conservation Department. She works with colleagues across the Museum to care for and understand the collection. Prior to joining MoMA, she was a research-based conservation scientist at the Metropolitan Museum of Art, the Institute for the Preservation of Cultural Heritage at Yale University, and the Art Conservation Research Center at Carnegie Mellon University. She holds a PhD in macromolecular science and engineering from Case Western Reserve University, and two BAs, in chemistry and art history, from SUNY Geneseo. She brings to MoMA her expertise in how material properties impact the stability of art, how to slow the aging and degradation of artist materials, and how to harness off-gassing information to determine whether commercial building, shipping, and storage materials are safe for use near the collection.