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In most cases, mining tar sands involves drilling two horizontal wells, one above the other, into the bitumen layer; injecting massive gouts of high-pressure steam and solvents into the top well, liquefying the bitumen; sucking up the melted bitumen as it drips into the sand around the lower well; and then refining the bitumen into “synthetic crude oil.”

Economists sometimes describe a fuel in terms of its energy return on energy invested (EROEI), a measure of how much energy must be used up to acquire, process, and deliver the fuel in a useful form. OPEC oil, for example, is typically estimated to have an EROEI of 12 to 18, which means that 12 to 18 barrels of oil are produced at the wellhead for every barrel of oil consumed during their production. In this calculation, tar sands look awful: they have an EROEI of 4 to 7. (Steaming out the bitumen also requires a lot of water. Environmentalists ask, with some justification, where it all is going to come from.)

To obtain shale gas, companies first dig wells that reach down thousands of feet. Then, with the absurd agility of anime characters, the drills wriggle sideways to bore thousands of feet more through methane-bearing shale. Once in place, the well injects high-pressure water into the stone, creating hairline cracks. The water is mixed with chemicals and “proppant,” particles of sand or ceramic that help keep the cracks open once they have formed. Gas trapped between layers of shale seeps past the proppant and rises through the well to be collected.

The crisis has also transformed the European Union into something radically different from what was originally intended. The EU was meant to be a voluntary association of equal states but the crisis has turned it into a hierarchy with Germany and other creditors in charge and the heavily indebted countries relegated to second-class status. While in theory Germany cannot dictate policy, in practice no policy can be proposed without obtaining Germany's permission first.

Italy now has a majority opposed to the euro and the trend is likely to grow. There is now a real danger that the euro crisis may end up destroying the European Union.

In 2008-09, there was a collapse of global trade. We were all very surprised. Output was not doing well, but the collapse in global trade was enormous. We realized at the time that the elasticity of trade with respect to global output was not 1, as you might think, but more like 3 to 4. So this explained it. And then it recovered like crazy.

This is still true. If global output goes down by 1%, global trade goes down by 3% to 4%.

What Europe needs to do:

The big difference in the EZ is that nations cannot go off the euro as they went off the gold standard

A major part of Lenin’s analysis, for instance, was devoted to the demonstration that Russia had become a quasi-colony as a result of the large scale capital imports, and that the foreign creditors in effect controlled Russia’s foreign policy.

The linkages of these issues can be summarized as a series of impossible trinities or trilemmas.

It’s true that the U.S. economy has grown faster than that of Europe for the past generation. Since 1980 — when our politics took a sharp turn to the right, while Europe’s didn’t — America’s real G.D.P. has grown, on average, 3 percent per year. Meanwhile, the E.U. 15 — the bloc of 15 countries that were members of the European Union before it was enlarged to include a number of former Communist nations — has grown only 2.2 percent a year. America rules!

In 2008, 80 percent of adults aged 25 to 54 in the E.U. 15 were employed (and 83 percent in France). That’s about the same as in the United States. Europeans are less likely than we are to work when young or old, but is that entirely a bad thing?

Broadband, in particular, is just about as widespread in Europe as it is in the United States, and it’s much faster and cheaper.

Early work on optimum currency areas by Robert Mundell had emphasised the symmetry or asymmetry of disturbances hitting different regional economies as a key criterion on which to gauge their suitability for sharing a common currency.

We now know that Kenen flagged a problem for which the Eurozone could have been better prepared. With an outsized capital-goods producing sector, Germany benefitted from a strong positive shock as a result of China’s emergence onto the global stage, given the Chinese economy’s voracious appetite for capital goods.

First, the rate of return has remained approximately 30 percent for decades.

In late 2008, the Chinese Communist Party began the “1,000 Talents” program, aimed at these supremely talented Chinese. Through a wide variety of terrific incentives — sometimes as much as $1 million — the party has encouraged academic and research institutes, as well as municipal governments, to “bring back the best.”

Italy Falls Back Into Recession, Raising Concern for Eurozone Economy

The economic data and news that Russia was massing troops and military equipment on the Ukrainian border caused stock prices to fall across Europe on Wednesday.

Analysts surmised that the strained relations with Russia as well as turmoil in the Middle East had undercut demand for Italian exports, in particular fashion and other luxury goods.

For several months, IBM has been seeking to sell its chip-manufacturing operations

The most likely buyer is GlobalFoundries, a large contract chip manufacturer, the person said, for a price of probably less than $2 billion.

Ms. Rometty stated that while IBM’s priorities were in fields like data analytics and cloud computing, and it had agreed to sell its industry-standard computer server business to Lenovo of China for $2.3 billion, she added: “But let me be clear — we are not exiting hardware.”

GDP: A Bad Measure of Well-Being David Henderson

As LED Industry Evolves, China Elbows Ahead

“LED lighting could see itself become the next solar, wind or other future opportunity that the U.S. will have given away by failing to address Chinese industrial policies and unfairly traded products,”

SolarWorld, a solar panel maker that complained to the American government about what it considered unfair advantages for Chinese competitors, was later the victim of a cyberattack by Chinese military officials, according to a recent indictment by the Justice Department.

"Be extremely cautious that you don't take more than you can service. Try to issue liabilities that involve an element of risk sharing between the creditor and the debtor," he said.

"As for international contracts, be very careful that you treat the business cycle symmetrically. If you stimulate and borrow when the economy goes down then you must tighten... when the economy grows."

t’s the math: In fiscal 2012, Social Security, Medicare, Medicaid and civil service and military retirement cost $1.7 trillion, about half the budget.

As a share of national income, defense spending ($670 billion in 2012) is headed toward its lowest level since 1940.

Empirical evidence suggests deleveraging episodes accompanied by a housing crisis will take on average five and a half years across high-income OECD countries (or seven years when accompanied by a banking crisis (Aspachs-Bracon et al. 2011, IMF 2012).

The clothing needs to be labeled correctly so that it travels smoothly through a large retailer’s distribution centers

The process requires formidable numbers of skilled workers who can oversee quality control as well as labeling and shipping of garments.