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electricity

Hydropower megaproject to dam River Congo

Earth

Hydropower megaproject to dam River Congo

A series of hydroelectric dams on the river, to be constructed from 2015, could generate twice as much energy as China's record-breaking Three Gorges dam

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Earth

It's too early to herald a US nuclear renaissance

Opinion

Flow batteries could back up grid of the future

Technology

Flow batteries could back up grid of the future

Analysis

Send a text message to charge your cellphone

Technology

Send a text message to charge your cellphone

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Reap the whirlwind for cheap renewable power

Earth

Reap the whirlwind for cheap renewable power

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Armband adds a twitch to gesture control

Technology

Armband adds a twitch to gesture control

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Health

How electrodes in the brain block obsessive behaviour

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Flowers get an electrifying buzz out of visiting bees

Life

Flowers get an electrifying buzz out of visiting bees

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A shocking cure: Plug in for the ultimate recharge

Technology

A shocking cure: Plug in for the ultimate recharge

Features

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Earth

Wind power is now cheaper than coal in some countries

Steady technological improvements and uncertainty over the future of fossil fuels are making wind power truly competitive

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Earth

Texas mega-battery aims to green up the grid

Analysis

Technology

Muscle-zapper forces gamers' own hands against them

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Technology

Muscle mimic pulls electricity from wet surface

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Health

Batteries not required, just plug into ear cells

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