The course will focus on emerging science and technologies that enable the transition from our traditional linear economy (take, make, waste) to a new circular economy (reduce, reuse, recycle). It will discuss the fundamental theories and applied technologies that are capable of converting traditional waste materials or environmental pollutants such as wastewater, food waste, plastics, e-waste, and CO2, etc. into valued-added products including energy, fuels, chemicals, and food products.