In its four-billion-year-old history, the Earth has changed – sometimes slowly (such as mountain building) and sometimes with violent and sudden transformations that can be devastating (such as a meteorite impact). In Earth Sciences you'll learn about the make up of our planet, from rocks and soil to water and the effects of climate change. We depend upon resources that come from the Earth, such as minerals, oil, organic materials, gases, and the water we drink. Who finds these hidden and valuable resources? A geoscientist!