Geological engineering is a type of engineering that studies the physical parts of the Earth. It combines the study of rocks, minerals and many other parts of the Earth such as soil, water and air. Geological engineers use their knowledge to help people use the natural resources, like oil, minerals and water, in ways that are safe, responsible and efficient. They also study the environment to make sure that these resources are being used safely, so we can all stay healthy. Finally, they help construct buildings and roads, making sure they don't damage the environment around them.