So that raised a question for researchers: Why, despite one of the largest environmental cleanups in history, has some oil persisted?
Besides, as the illegal bunkering of oil persists, incurring enormous losses to the national budget, the militants are plainly acting in cahoots with leading southern politicians, whose loyalty Mr Jonathan needs for his re-election in 2015 an event that seems uppermost in his mind.Opposition to Mr Jonathan is already gaining momentum, both within and outside his own party.
Scientists interested in how oil persists long after a spill have discovered traces of the substance lodged between boulders in Alaska; the remnants are similar to 11-day-old oil.
The Valdez Trustee Council writes: "One of the most stunning revelations of... the last ten years is that Exxon Valdez oil persists in the environment and in places is nearly as toxic as it was the first few weeks after the spill".
The increase in differential pressure is due to the mobilization of residual oil which persisted until oil bank breakthrough.
If high oil prices persist, we could be seeing a large drop in world trade.We may well be entering a new era of regional economic integration, at the expense of global integration.(Photo credit: AFP).
If high oil costs persist, energy shifts or energy savings might be required for long-term productivity growth.
If $40 oil prices persist a year from now, airlines won't be able to hedge at such low prices.
Despite great efforts including bioremediation, the 1989 Exxon Valdez oil spills persist in many gravel beaches in Prince William Sound, Alaska, USA.
The choice for Europe is less clear, as inflationary pressure from high food and oil prices persist, leaving the European Central Bank and the Bank of England with the unsavory choice of deciding whether to offer confidence-boosting rate cuts or to move to keep prices in check.
