Urban Rock Hunting with Dr Brooke Johnson

The story of the Earth is written in the rocks, and as a geologist, I read those rocks to tell that story. This often leads me to remote and exotic places. Like the heart of desolate Australian deserts or to the tops of mountains in the Canadian Rockies. But that story is all around us, too, in the towns and cities we live in. Humans have been using natural rock as building stone for thousands of years, the Great Pyramids of Giza, for example, are made from 50-million-year-old limestone littered with shells from the ancient seas.   Despite the advent of modern building materials like… Read More »Urban Rock Hunting with Dr Brooke Johnson