Tracking how air moves at night near the Earth's surface could provide insights into how air pollution spreads and when it's best to apply pesticides. This week, a team of University of South Carolina and University of Illinois researchers will launch a project to do just that. The two-month experiment -- called Stable Atmospheric Variability and Transport, or SAVANT -- will run from Sept. 15 to Nov. 15 in and near Mahomet, Illinois, and will measure air flow in what's known as a stable boundary layer.