Concerned about toxics in consumer products? This course demystifies underlying scientific concepts, including the science that drives outrage and brings concerns over toxics to the fore. We explore what it means for a chemical to be toxic and take a systems approach to understanding exposures to chemicals that can result in risks to human health and the environment. Case studies of headline issues and guest speakers from the industry make abstract concepts come alive. This course provides students with the tools to support effective action to make products more sustainable and to make better choices as a consumer.