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"Supertankers" are the largest tankers, including very large crude carriers (VLCC) and ULCCs with capacities over 250,000 DWT. These ships can transport 2,000,000 barrels (320,000 m3) of oil/318 000 metric tons.[46] By way of comparison, the United Kingdom consumed about 1.6 million barrels (250,000 m3) of oil per day in 2009.[47] ULCCs, commissioned in the 1970s, were the largest vessels ever built, but the longest ones have already been scrapped; only a few ULCCs remain in service, none of which are more than 400m long.[48] Because of their great size, supertankers often can not enter port fully loaded.[28] These ships can take on their cargo at off-shore platforms and single-point moorings.[28] On the other end of the journey, they often pump their cargo off to smaller tankers at designated lightering points off-coast.[28] A supertanker's routes are generally long, requiring it to stay at sea for extended periods, up to and beyond seventy days at a time.[28]

As demand grew moderately in the United States and Western Europe, expanding economies such as China fueled exponential growth in demand.[60]

The average one-year time charter rate for a 5-year-old tanker of 280,000 metric tons of deadweight varied from $56,500 per day in December 2005 to $53,000 per day in September 2007 with a high of $64,500 per day in September 2006.[59]

And then there’s the Chinese. They arrived like a well-packed picnic, everything in shipping crates ready to be unpacked. Their own materials, their own equipment, their own workers, their own fences. If you were designing a foreign investment not to benefit the host community, this is what it would look like.

But even if Zambia was run by a coalition of charitable technocrats and Mormon philanthropists, that wouldn’t solve the most fundamental problem of all: There simply isn’t that much money to go around.

And that’s just the bureaucracy. Then there are the cops that pull you over to ask for 50 kwacha ($10); the schools with slots reserved for paying parents; the hospitals that swear the earliest appointment, the only available medicine, is six months away until you reach into your pocket.

According to a report that KIPP issued last spring, only 33 percent of students who graduated from a KIPP middle school 10 or more years ago have graduated from a four-year college.

As Levin watched the progress of those KIPP alumni, he noticed something curious: the students who persisted in college were not necessarily the ones who had excelled academically at KIPP; they were the ones with exceptional character strengths, like optimism and persistence and social intelligence. They were the ones who were able to recover from a bad grade and resolve to do better next time; to bounce back from a fight with their parents; to resist the urge to go out to the movies and stay home and study instead; to persuade professors to give them extra help after class.

“The thing that I think is great about the character-strength approach,” he told me, “is it is fundamentally devoid of value judgment.”

Duckworth’s early research showed that measures of self-control can be a more reliable predictor of students’ grade-point averages than their I.Q.’s.

People who accomplished great things, she noticed, often combined a passion for a single mission with an unswerving dedication to achieve that mission, whatever the obstacles and however long it might take. She decided she needed to name this quality, and she chose the word “grit.”

Last winter, Riverdale students in the fifth and sixth grades took the 24-indicator survey, and their teachers rated them as well. The results were discussed by teachers and administrators, but they weren’t shared with students or parents, and they certainly weren’t labeled a “report card.”

Back at Riverdale, though, the idea of a character report card made Randolph nervous. “I have a philosophical issue with quantifying character,” he explained to me one afternoon. “With my school’s specific population, at least, as soon as you set up something like a report card, you’re going to have a bunch of people doing test prep for it. I don’t want to come up with a metric around character that could then be gamed. I would hate it if that’s where we ended up.”

She and her team of researchers gave middle-school students at Riverdale and KIPP a variety of psychological and I.Q. tests. They found that at both schools, I.Q. was the better predictor of scores on statewide achievement tests, but measures of self-control were more reliable indicators of report-card grades.

The CARE program falls firmly on the “moral character” side of the divide, while the seven strengths that Randolph and Levin have chosen for their schools lean much more heavily toward performance character: while they do have a moral component, strengths like zest, optimism, social intelligence and curiosity aren’t particularly heroic; they make you think of Steve Jobs or Bill Clinton more than the Rev. Martin Luther King Jr. or Gandhi.

The topic for the assembly was heroes, and a half-dozen students stood up in front of their classmates — about 350 kids, in all — and each made a brief presentation about a particular hero he or she had chosen:

I came to Witter’s class to observe something that Levin was calling “dual-purpose instruction,” the practice of deliberately working explicit talk about character strengths into every lesson.

It is a central paradox of contemporary parenting, in fact: we have an acute, almost biological impulse to provide for our children, to give them everything they want and need, to protect them from dangers and discomforts both large and small. And yet we all know — on some level, at least — that what kids need more than anything is a little hardship: some challenge, some deprivation that they can overcome, even if just to prove to themselves that they can.

The idea of building grit and building self-control is that you get that through failure,” Randolph explained. “And in most highly academic environments in the United States, no one fails anything.”

The International Monetary Fund will not disburse Greece's next bailout tranche until the country completes a voluntary buy back of its debt, an IMF spokesman said

Who will actually sell the debt at a 70% discount?

Two thirds of the private holders of Greek debt are Greek banks (22 billion euro). These are certainly not going to sell because doing so forces them to realize losses on the debt,

There is a simple and obvious solution, which will then force itself. The official creditors should take really substantial losses on Greek debt.

The only real alternative is Greece leaving the euro

This situation is basically a slow asphyxiation.

Rick Manner, a vice president at consultancy KBC Advanced Technologies who has contributed to gas-to-liquids studies for Sasol and other companies, estimated that the projects must keep capital costs at $100,000 for every barrel a day of production capacity to be worthwhile economically at current prices of about $100 a barrel for oil and $4 per thousand cubic feet for natural gas.

Mr. Louw, Sasol’s Qatar president, said that the Oryx plant was designed to be profitable with oil at $25 a barrel. That implies a very low long-term price for the natural gas feedstock. He would not specify what Sasol pays its Qatari partner for gas, but he said it was “not zero.”

Two huge injections of cheap three-year loans into the euro zone banking system this year, amounting to 1 trillion euros, bought only a few months' respite.

Conservative German economists led by Hans-Werner Sinn, head of the Ifo institute, are warning of dire consequences for Germany from ballooning claims via the ECB's system for settling payments among national central banks, known as TARGET2.

As long as European monetary union is permanent and irreversible, such cross-border claims and capital flows within the currency area should not matter any more than money moving between Texas and California does.But even the faintest prospect of a Day of Reckoning changes that calculus radically.In that case, money would flood into German assets considered "safe" and out of securities and deposits in countries seen as at risk of leaving the monetary union. Some pessimists reckon we are already witnessing the early signs of such a process.

Either member governments would always be willing to let their national central banks give unlimited credit to each other, in which case a collapse would be impossible, or they might be unwilling to provide boundless credit, "and this will set the parameters for the dynamics of collapse", Garber warned.

Despite the suddenly easier terms under which Ireland and other recovering euro zone countries can borrow, the fact remains: These countries are still mired in stagnation.