Australia has the largest and most beautiful coral reef system in the world, the Great Barrier Reef. It has 17 protected natural areas recognized by UNESCO for their importance. The Australian government has implemented environmental protection rules like requiring energy-efficient lighting by 2010 and replacing plastic bags with greener alternatives to protect its proud natural heritage. New Zealand also has three UNESCO world heritage sites, most spectacularly the Tongariro National Park, and protecting flora and fauna is a top priority. By contrast, Ukraine remains one of the most polluted countries due to industrial pollution in its east and the lingering effects of the Chernobyl disaster, while Germany has significantly reduced pollution since the 1990s through government investment and job