It transforms only around 0.1% of the infra-red light thrown at it into electricity (compared with 20% for an ordinary solar cell).

ECONOMIST: Monitor

It will be an even longer time before the new stockmarket, which will initially list shares in only four companies, transforms Vietnam into a fund-managers' paradise.

ECONOMIST: Vietnam: Pulling teeth | The

This transforms the car into a virtual office, giving motorists not only dull information such as how fast they are travelling, but also e-mail, the Internet, news services and navigation functions.

ECONOMIST: Wired cars

Only your fists, power-ups, and the occasional giant egg (which transforms you into a gnome or transfer you to the back of a laser-breathing dinosaur) can keep you running.

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