It may set a static price, but there is no guarantee that a carbon tax will adequately reduce carbon emissions.

ECONOMIST: On the environment, Paris Hilton, Sri Lanka, DP World, animal sacrifices, Apple, the future | The

What makes aircraft fatigue such an dark art is that, unlike standard tests done in a laboratory, an aircraft's structure has to endure a complex, mostly random, set of static as well as cyclical stresses when in service.

ECONOMIST: Aircraft fatigue