NASA Discovery Day is a free event for all ages at the Sioux Falls Downtown Library. Innovate Remote Sensing Scientist, Cole Krehbiel, will appear to represent USGS EROS and the Land Processes Distributed Active Archive Center (LP DAAC). He will be demonstrating the Global Rotating Utility for Visualization (GRUV) scavenger hunt with area students. This NASA-created visualization software is similar to Google Earth in that it allows users to zoom in and out of the world on a sphere. The GRUV system highlights LP DAAC imagery. NASA Discovery Day takes place from 2 to 4 pm, CT. For more details, please visit the Sioux Falls Library’s website.