Global Economy

Self-driving vehicles are an example of the crosscurrents.

Ad sales agents and pilots are two jobs that the Bureau of Labor Statistics projects will decline in number over the next decade. Flying a plane is largely automated today and will become more so.

Telemarketers are among those most at risk

More than 16 percent of men between the ages of 25 and 54 are not working, up from 5 percent in the late 1960s; 30 percent of women in this age group are not working, up from 25 percent in the late 1990s.

“The answer is surely not to try to stop technical change,” Mr. Summers said, “but the answer is not to just suppose that everything’s going to be O.K. because the magic of the market will assure that’s true.”

“He’s helping us think about what is one of the greatest challenges of our time, how to deal with what feel like friendly monopolists,” said Tim Wu, a Columbia Law School professor who studies Internet policy and antitrust. “Amazon, Google and the others give us all this stuff for free or lower prices, so we love them, but are they dangerous in ways we don’t always see?”

In the 2002 paper with Jean-Charles Rochet, Mr. Tirole defined two-sided markets, or markets that “get both sides on board” by charging more to one set of customers in order to increase demand by others.

In the tech industry, it explains why Google, Facebook and Twitter offer their services free – the more people who use them, the more advertisers they can attract. Likewise, Amazon lowered the price of its new phone to 99 cents in part because smartphones succeed when they have a lot of apps – and developers won’t want to build apps for Amazon’s phone unless a lot of people are using it.

For regulators, tech companies have been a riddle in part because they do not follow the behavior of typical monopolies: Many do not charge for their products, and companies that offer entirely different products are nonetheless competitors. For instance, Google’s chairman, Eric Schmidt, argued in a speech on Monday that Google’s biggest competitor in search is Amazon and in mobile is Facebook — even though neither one is a search engine.

For consumers, the costs include absorbing advertisers’ ad spending by paying more for their products, being tracked and shown personalized ads, and giving up privacy.

our end-users do not internalize the impact of their purchase on the other side of the market.”

Domestic oil production has rocketed by roughly 70 percent over the last six years to 8.7 million barrels a day, and imports from members of the Organization of the Petroleum Exporting Countries have already been cut roughly by half.

many oil experts predict that the country’s output will rise to as much as 12 million barrels a day over the nex

Shale oil is predominately light, sweet oil, meaning it is low in sulfur content and flows freely at room temperature.

United States exports of oil could reach three million to four million barrels a day in a few years, more than most OPEC producers currently provide world markets.

Solazyme points to substances like rennet, a key processing aid in cheese-making that requires an enzyme called chymosin to promote clotting. Traditionally, calves’ stomachs were used to provide that enzyme to curdle milk for cheese. But since the late 1990s, rennet has been generated by a microbe whose genetic code was altered with the insertion of a single bovine gene, and that process is the one most widely in use now in the United States.

Solazyme describes the organism that produces the oil as “an optimized strain” of single-cell algae “that have been in existence longer than we have.”

Solazyme pointed to the environmental benefits of its processes and noted that the World Wildlife Fund, Rainforest Alliance and other environmental groups support its work. “We use molecular biology and standard industrial fermentation to produce renewable, sustainable algal oils that help alleviate pressures on the fragile ecosystems around the Equator that are frequently subject to deforestation and habitat destruction,”

they would help inoculate European economies against the adverse effects of energy disruptions in the medium term.

Consideration should be given to invoking GATT Article XXI, which provides exceptions for national security reasons from rights and obligations under the World Trade Organization (WTO), for example. Invoking this WTO exception would allow across-the-board actions against Russia without prior notification or even justification. The national security exception of Article XXI is that broad. In brief, the United States and the European Union could remove in one step all the WTO benefits they accorded Russia when it acceded to the WTO in August 2012. Doing so would disrupt bilateral trade and investment, possibly kicking tariffs back up to Smoot-Hawley levels of the 1930s.

Some countries in Central Europe — such as Austria and the Czech Republic — and the Balkans would run out of gas they import through Ukraine.

that Russia cuts supplies of gas through Ukraine but continues pumping it through its other two pipelines to the West — one through the Baltic and the other through Poland.

In such a scenario,

The European Union also responded to the 2009 shutdown by building “interconnectors” between different countries. As a result, it is easier to shunt gas and electricity from countries that have excess energy to those that face a shortage — though these connections are still patchy and need to be built up.

n the short run, European Union countries can use more coal and less gas in their electricity generation.

The European Union can also increase imports of liquefied natural gas, mainly from Qatar. But there are problems. First, most of the Union’s L.N.G. terminals are in Western Europe, whereas it is the eastern part of the Union that is most vulnerable to a cutoff of Russian gas. So more terminals need to be built, which takes time. What’s more, L.N.G. is expensive — partly because Japan is buying lots of it after closing its nuclear plants in the wake of the Fukushima disaster.

Longer term, European Union nations should embrace shale gas. It is cheap and local. Britain and Poland have the most potential.

Meanwhile, countries such as Germany should abandon their knee-jerk aversion to nuclear energy.

The problem is not the carbon goal, said Raoul Ruparel of Open Europe, a research institute. Rather it is the renewable target, which results in uneconomic wind and solar power being built across the Union.