The main purpose for people living in Antarctica is to undertake scientific research. Australia has three permanent Antarctic stations (Davis, Casey & Mawson) and one permanent subantarctic station at Macquarie Island. We conduct research in atmospheric studies, biology (including plants and animals), glaciology, medicine, human impact, environment, etc. In order to support this scientific research and keep the research stations running, tradespeople also live at the stations. These include plumbers, electricians, mechanics and carpenters.