— The University of Nebraska–Lincoln’s Gudmundsen Sandhills Laboratory will host its annual open house Wednesday, Aug. 19, near Whitman. The open house will feature keynote speaker Nicki Nimlos, rangeland management specialist with University of Wyoming Extension, who will discuss carbon markets and opportunities for ranchers and landowners. Located in the Nebraska Sandhills, the Gudmundsen Sandhills Laboratory spans Grant, Hooker and Cherry counties. GSL plays a key role in developing environmentally and economically sustainable plant and animal production systems for the Nebraska Sandhills. To register for the open house and view the itinerary, visit go.unl.edu/gslopenhouse .