Blue Mounds State Park ranger Craig Beckman watches a herd of bison July 24 as they gather at a buffalo wallow at the park near Luverne. State conservationists now want to use the herd to help build genetic diversity, creating healthier North American bison and, someday, to bring the native giants to more state parks – where experts say they once lived. Associated Press
Read the article: Conservationists at work on Minnesota bison genetics

