STANFORD UNIVERSITY: UNDER THIS NEW ROOTS AWARD, STANFORD UNIVERSITY WILL DELIVER A NOVEL MIXED-MODALITY SYSTEM FOR LARGE-SCALE AND FIELD-ORIENTED DETECTION OF ROOT BIOMASS PROFILES IN A VARIETY OF SOIL ENVIRONMENTS AND PLANT SPECIES. CONTROL NUMBER: 1565-1555 TITLE: ''THERMOACOUSTIC ROOT IMAGING, BIOMASS ANALYSIS, AND CHARACTERIZATION''