The National Science Foundation (NSF) awarded a $599,648 Project Grant through its Mathematical and Physical Sciences (CFDA 47.049) program to the University of California, San Diego (UCSD) to investigate the chemistry of biological macromolecules, such as proteins and environmental DNA, within aqueous aerosols. The 2-year research project, led by Professors Vicki Grassian and Rommie Amaro, will integrate laboratory experiments and computational simulations to study the surface properties, reactivity, and stability of these biomolecules in small water droplets in the atmosphere. The research aims to address key knowledge gaps in understanding the behavior of biological macromolecules in aqueous aerosols, which have implications for atmospheric chemistry, climate, and human health. UCSD plans to engage students in this interdisciplinary research and participate in outreach activities to share the findings with the broader public.