How does geology work? Exploring the science that reveals the secrets of our planet

How can we understand the Earth by studying its rocks and minerals? 
Why should we study them? What tools do we use? 

Here are some of the questions that geology, a young, rapidly growing field that is incredibly valuable in everyday life, seeks to answer.
By applying principles of geology, such as analyzing resource formation, assessing risk and understanding Earth's history, we can mitigate hazards, and avoid past environmental mistakes.

Professor Fabrizio Berra carries out research and teaches geology at the 'Ardito Desio' Department of Earth Sciences at the University of Milano.