from Mary Rackham, sculptor Corrado Parducci created the Horace Rackham Memorial Fountain, known as "the Bear Fountain." During the summer, the fountain is a splash pad and in winter it becomes an ice rink. From the 1950s through the early 1970s, local weatherman Sonny Eliot hosted a program, At the Zoo, shown on Saturdays on television station WDIV. In 1950, the zoo hired senior floriculturist Thomas (Fred) Roberts. Roberts was a recognized expert on dahlias and his gardens at the zoo, particularly the dahlia exhibit to the west of the Rackham Memorial Fountain, attracted visitors from across the country. Throughout the mid century era and into the 1980s, the zoo's gardens were elaborate displays of perennial plants, flowers, and tropical varieties. Sonny Eliot interviewed Roberts for one of his episodes of At the Zoo. Fred Roberts remained at the zoo until 1978. His garden designs were maintained through the 1980s. Until 1982, trained chimpanzees performed for visitors, but the act was discontinued at the insistence of animal rights activists. In 1982, the zoo began to charge an admission fee. The Arctic Ring of Life, one of North America's largest polar bear habitats, opened in 2001. Centered around a 300,000 gallon aquarium, it allows visitors to view polar bears from a 70-foot underwater tunnel made of clear acrylic. Other new buildings include the Ruth Roby Glancy Animal Health Complex (2004) and the Ford Education Center (2005), which offers school and youth group programs as well as having a theater and exhibit space. In 2005 the Zoo became the first in the U.S. to no longer keep elephants for ethical reasons, claiming the Michigan winters were too harsh for the animals and that confining them was stressful. The elephants, Wanda and Winky, were relocated to the Performing Animal Welfare Society's (PAWS) sanctuary in San Andreas, California. Winky died in April 2008 ; Wanda died in February 2015. The former elephant exhibit was renovated and is now home to two white rhinoceros, Jasiri and Tamba. The Australian Outback Adventure, opened in 2006, allows visitors to walk through a simulated Outback containing red kangaroos and red-necked wallabies. Nothing separates visitors from the marsupials, allowing the animals to hop freely onto the walking path. On February 18, 2006, the Detroit City Council voted to shut down the Zoo as part of budget cuts, being unable to reach an agreement with the Society to take over