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Earth

Why sustainable power is unsustainable

Renewable energy technologies are needed to safeguard our planet's future from climate change – but many rely on resources that have a limited future

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Earth

Carbon catalyst could herald cut-price fuel cells

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Cheap, super-efficient LED lights on the horizon

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Cheap, super-efficient LED lights on the horizon

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US states may regain control of vehicle emissions

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US states may regain control of vehicle emissions

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Could biodiesel power future rockets?

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Could biodiesel power future rockets?

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Earth

A smarter way for oil firms to pay for eco damage

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Invention: Biofuel from the oceans

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Invention: Biofuel from the oceans

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Top 7 alternative energies listed

Earth

Top 7 alternative energies listed

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Car exhaust fumes cause lightning strikes

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Car exhaust fumes cause lightning strikes

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Balloon power isn't just a load of hot air

Earth

Balloon power isn't just a load of hot air

A giant engine with a tethered balloon for a "piston" could generate cheap, renewable electricity

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Earth

Why wind turbines aren't bat-friendly

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Earth

Invention: Tree-hugging wind turbine

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Technology

Should nuclear fuels be taken out of national hands?

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Technology

World's smallest fuel cell promises greener gadgets

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