A Crude Warning to Diversify?

“…Oil…Black Gold. Texas Tea.” – maybe you’ll remember the TV show that included that line in its opening credits. Back in the monochrome 1960s when ‘The Beverly Hillbillies’ was made, the world seemed a much simpler place: find oil, make millions, never need to worry again. Even twenty years later, we were still being enthralled by all the scheming and back-biting at the Oil Baron’s Ball in ‘Dallas’. For most of the last century, the very mention of oil in