👉 Geologists are individuals or groups who specialize in studying Earth's crust, rocks and minerals, their composition, and processes that shape Earth's surface. They use various scientific methods to study these topics and can provide valuable insights into geological history, rock formation, mineralogy, and the movement of tectonic plates. Geologists often work in universities, government agencies, and professional organizations, including NASA, the Geological Survey of Canada, and the U.S. Geological Survey.