The potential for new large-scale upstream irrigation in the Mekong basin is limited by topography and so the annual flow of 400-500 billion cubic metres into the Delta is just not to going to disappear.

ECONOMIST: Letters

Head down to Brazil, and the scale of pre-salt finds have been enormous for Petrobras (700 million barrels in the Campos Basin alone).

FORBES: Has Unconventional Oil Production Peaked?