Birmingham scientists' energy breakthrough - full report

Scientists have disovered how to make gold from rubbish - black gold - in other words - oil.

It sounds like the Holy Grail for the energy industry, but researchers at Aston Univeserity in Birmingham have figured out that if they burn rubbish and garden clippings in a pressure cooker - it turns into oil and gas.

They're heating their own building with it - now they want to help firms do the same thing and say large cities can become self-sufficient in generating their own power. Our business correspondent, Mark Gough reports.