ALLENDALE (WHTC) - Grand Valley State University has been named one of America's "greenest colleges" by the Sierra Club. The organization ranks colleges each year based on 11 criteria to determine how enviornmentally-friendly they are. G-V-S-U ranked 16th nationally, while Aquinas College in Grand Rapids was ranked 41st. The University of California-Davis was named the top-ranked "green" college.