Earth scientists study the nature and evolution of the structure of our planet, covering everything from natural crystals and fossils to the powerful forces that drive earthquakes and volcanoes and move continents across the globe. The discipline is increasingly moving from resource exploitation to issues revolving around sustainability. This means Earth scientists have important roles in a diverse range of environmental issues including pollution, remediation and creative solutions for climate change. Earth science at UNSW includes environmental geology, geochemistry, geophysics, hydrogeology and groundwater contamination, mineral and petroleum exploration and resources, palaeontology, remote sensing and much more. Fieldwork in different regions of New South Wales is an essential part of Earth science.