Join the Illinois Natural History Survey Seminar Committee at the Natural History Building for a lecture from Yu-Feng Forrest Lin, ISGS, Director of Illinois Water Research Center and Assoc. Director of Sea Grant in honor of Earth Week. This presentation will discuss advances in temperature observation based on several studies using a fiber-optic distributed temperature sensing (FO-DTS) system at the Guarani aquifer system and a thermal response test for geothermal exchange in Urbana as an example on Water-Energy nexus study.