Which economic ideas are the most powerful, and which are the most frequently misunderstood? How can economists communicate more effectively with policymakers and with the public? And why has economics, unlike physics or biology, failed to deliver shelves full of bestselling books and documentaries? Tim Harford presents ideas from his...

Preventing future terrorist attacks from Islamic radicals depends on the willingness of the local Muslim communities to turn in their neighbors they suspect are up to no good and the police's ability to use undercover assets.

A review of Daniel Mandel's H.V. Evatt and the Establishment of Israel: The Undercover Zionist.

Last week, the London-based nonprofit Bureau of Investigative Journalism published a series of articles accusing the U.S. of covering up civilian casualties caused by drone attacks in Pakistan's tribal areas. In reality, drones represent the most discerning--and therefore most moral--form of aerial warfare in human history.

Diamonds are impossible to fake to a moderately trained eye. But it is much harder to detect where a diamond is from. And because diamonds are often found in places run by dictators and despots, there is a business in faking a "blood" diamond's provenance to pretend it was mined elsewhere.

Tension between Iran and the United States flared on December 28, 2011, when Habibollah Sayyari, commander of Iran’s navy, threatened to close the Strait of Hormuz, the 34-mile-wide passage through which more than one-third of the world’s oil tanker traffic travels.

Fake drugs kill thousands of people each day, thanks to counterfeiters in China and India who mix chalk, dust, and dirty water into pills sold around the world.

America will not return to normal until Reagan National Airport is reopened.