Mr Stutley and Mr Saunders are mining a patch of land 15 miles north of the South Australian town of Coober Pedy, which is known as "the opal capital of the world". South Australia supplies 80% of ...

Coober Pedy is at the centre of Australia's opal mining industry. Now the town, where 60% of its residents live underground, is becoming a leader in sustainable living. Video by Clare Richardson ...