Technology
Sun-focusing satellite dish heats water on your roof
Concentrated solar power is no longer confined to the desert: soon it might be on your roof, heating your bathwater
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Earth
German energy crisis points towards climate solution
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Pioneering implant revives legs of paralysed men
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Electric heart sock could kick out pacemakers
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Healing spark: Hack body electricity to replace drugs
Features
Physics
Spinning wind turbines spark clockwork lightning
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Physics
Fastest routes revealed by mimicking electrical flow
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Earth
Natural ball lightning probed for the first time
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Technology
Hydrogen fuel cell is new charger for mobile gadgets
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Technology
Electricity use drops as UK passes ‘peak light bulb’
Low-energy light bulbs are cutting peak electricity demand in the UK, helping to keep the juice flowing even as old power stations are mothballed
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Electricity use drops as UK passes ‘peak light bulb’
News
Technology
Collapsing backpack charges gadgets as you walk
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Earth
Microbe steals neighbour’s electricity to make methane
News
Technology
Pop music makes solar cells produce more electricity
News