Professor and Research Professor at the Department of Chemistry and Biochemistry of the Arizona State University (USA). Her research spanning over thirty years has been devoted to the study of organic materials in carbonaceous chondrite meteorites, with an emphasis on the molecular, isotopic, and chiral characterization of their soluble compounds. More recently, she has focused on the study of non-racemic amino acids from meteorites. She has published in journals including Science and PNAS, among others.