Australia is an island country located between the Indian and Pacific Oceans with a population of over 22 million people. It has a diverse climate ranging from desert to temperate to tropical zones. English is the primary language, and Australia uses its own currency, the Australian dollar. Key aspects of Australian culture include Aboriginal cave paintings, opera singer Joan Sutherland, and foods like Pavlova. Australia has a high GDP per capita and low poverty rate with a federal constitutional monarchy and market economy. Famous Australians include actors Mel Gibson and Nicole Kidman and musicians from AC/DC and Kylie Minogue.