Happy 40th birthday, Badlands National Park! This South Dakota park was established on this day in 1978, and it’s anything but bad. Long before it was a park, the Badlands’ rugged beauty has drawn visitors from around the world. These striking geologic deposits contain one of the world’s richest fossil beds. Today, the park’s 244,000 acres protect an expanse of mixed-grass prairie where bison, bighorn sheep, prairie dogs and black-footed ferrets live. Photo by William Green (www.sharetheexperience.org).