Guardian: If the 19th-century epitome of a futile economic transaction was carrying coals to Newcastle, then the 20th century equivalent might have been importing oil to Saudi Arabia. Rarely has a country been so spectacularly well endowed with a resource so fundamental to the functioning of the global economy in a particular era. How striking, therefore, to learn that the Saudi oil minister, Ali al-Naimi, is predicting that within just 25 years we could no longer need fossil fuels. This, from a representative...