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Hollow steel ball bearings made to save weight

Fuel cell powers 23 hour flight

F1 regulation changes bring better steels for general automotive transmissions

Night lights powered by hot radiators

Mechanical tester finds leaks in all packaging

Sine wave disk pumps delicate objects

Nanotubes make aluminium nearly as strong as steel

Diamond electronic devices pave way for lower cost renewable energy

New open standard to enable faster roll-out of smart meters

High power magnets are energised by heat

Getting to grips with natural principles

£22million offered to wave and tidal developers