The joys and perils of porcelain, kaolin and volcanic soils.
Spiders love drystone walls, and the Peak District has 100s of miles of limestone walls.
Zakia Sewell explores the songs, stories and symbols of British identity.
Natural rubber still goes mostly into tyres, and its production still causes controversy.
Wood can do anything that oil can do. Could it be the backbone of a future economy?
Kathy Willis explores the smuggling of rubber seeds from South America.
Paul Evans discovers the importance of soil to the quality of our future environment.
Why do people love pebbles? What do pebbles tell us about the world – and about ourselves?
Can we build our cities out of wood instead of concrete and steel?