The fifth is the observation in reality of a predicted link between increased sea-surface temperatures and the frequency of the most intense categories of hurricane, typhoon and tropical storm.

ECONOMIST: Changing science

Further, with more frequency than attorneys feel comfortable admitting, errors in existing documents may surface requiring corrective action.

FORBES: "Fixing" the Broken Estate Plan

The machine that Dr O'Brien and Dr Frazier have designed to get round these constraints consists of a transmitter that sends out a pulse of sound at a frequency of 6 kilohertz, and an array of 52 receivers that collect the reflections from anything buried beneath the surface.

ECONOMIST: Archaeology