Dayton Regional Green will hold a Facebook Live from 4-5 p.m. April 3 to discuss its quest for the OpenIDEO Food Systems Vision Prize. Partners in the greater Dayton region developed an application for the prize sponsored by the MacArthur Foundation. The team led by a University of Dayton mechanical and aerospace engineering professor Kevin Hallinan was one of 79 semifinalists out of 1,319 worldwide entries.