David Attenborough says: “The future of humanity and indeed all life on Earth depends on us.” Geology is a practical science where we will journey through the last 4.5 billion years, using evidence from the rock and fossil record to reconstruct the key events that have occurred. We will reconstruct past climates to identify the triggers of climatic change. By understanding the climatic changes of the past, we may be able to predict what will happen in the future.