In this episode of If I Could Change One Thing, Dr. Kari Sant and Dr. Brittnie Bloom dive into the intersection of environmental justice, public health, and personal responsibility. From the impact of air pollution in Southern California to water quality concerns in scarce regions like the Tijuana River, they discuss how small, everyday changes—like using air purifiers and water filters—can contribute to a healthier environment. Dr. Sant also shares insights from her research on contamination events and advocacy for affected communities, as well as the role of zebrafish in toxicology studies. Tune in for a thought-provoking conversation on how science, policy, and action come together to shape a healthier future.