In Essence

Supreme Court appointees who come from "outside" Washington often drift Left during their term on the Court. Washington insiders—Chief Justice John Roberts is a prime example—are usually immune to ideological shifts.

America's enemies have shifted battlefields to cities, jungles, and mountains, where the U.S. military’s technologically superior machines are ineffective. As a result, U.S. infantry soldiers now suffer four of every five combat deaths.

The world’s coastal nations are scrambling to stake out territory on the last international frontier, on the floor of the Arctic Ocean. The rush to secure potentially valuable mineral and oil rights is shining light on the convoluted laws regarding sovereign territory.

A science historian dares to mount a defense of luck: "Chance disrupts tidy lives, unsettles habits—and taps unplumbed resources, both personal and social.”

It's easy to figure out that a college degree is a sound investment for an individual. Whether all those college graduates are good for the economy is a much trickier calculation.

Sociologists have explored virtually every aspect of the poor and middle class, but they are finally beginning to study the enclaves of the rich.

New Yorkers pride themselves on a tradition of successfully absorbing immigrants, even if the story is not always quite true.

Since the end of the Cold War, the foreign policy establishment has stood solidly behind international activism. It's time to admit the experiment has failed.

The new kind of war being fought in Iraq has resulted in much lower troop deaths compared to earlier conflicts, but woundings are still alarmingly high.

Supreme Court justices used to serve shorter terms, either because of death or semi-graceful retirement. Now the average tenure surpasses a quarter-century, and many think term limits are in order.

Pages