With over 60 per cent of the world’s population living in cities, the networks beneath our feet – which keep the cities above moving – are more important

In Subterranean Twin Cities, geologist, historian, and urban speleologist Greg Brick takes us on an adventurous, educational, and-thankfully-sanitary journey be

New ideas and technologies are transforming the ways we build and inhabit underground space. This book explores how these innovations can help to make our incre

History of the vast underground arsenals, factories and bunkers built by the British government during WWII and the new uses found for them.

Book Features: • 32 pages, about 7 inches x 9 inches • Ages 8-14, Grades 3-8 leveled readers • Easy-to-read pages with vibrant photos • Features before,