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Editor's choice

Jan 19, 2014

A special free-to-read digital edition containing 10 of our very best feature articles on the science and applications of light

Features: July 2002

Energy challenges

Environmental concerns fuel the search for alternative energies

Green cars move into top gear

Manufacturers are developing vehicles that use fuels other than petrol

The hydrogen economy blasts off

Economies based on hydrogen fuel are being taken more seriously

Energy savings go through the roof

New materials and a holistic approach are slashing domestic energy consumption