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20,000 megawatts under the sea: Oceanic steam engines

Earth

20,000 megawatts under the sea: Oceanic steam engines

Jules Verne imagined this limitless power source in Victorian times – now 21st-century engineers say heat trapped in the oceans could provide electricity for the world

Features

Cryptic river: The torrents that flow on the seabed

Earth

Cryptic river: The torrents that flow on the seabed

Features

Deep-sea mining projects land in hot water

Earth

Deep-sea mining projects land in hot water

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We're drilling back in time to tell a tale of the sea

Earth

We're drilling back in time to tell a tale of the sea

Opinion

Satellite-like eyes give mantis shrimp unique vision

Life

Satellite-like eyes give mantis shrimp unique vision

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Antibiotic abyss: The extreme quest for new medicines

Life

Antibiotic abyss: The extreme quest for new medicines

Features

Elephant shark takes record for slowest evolution

Life

Elephant shark takes record for slowest evolution

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Earth

Pacific coral happy as acidity of the ocean rises

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Swindlers and scientists: How to get gold from the sea

Earth

Swindlers and scientists: How to get gold from the sea

Features

Kneel before this giant undersea plough

Technology

Kneel before this giant undersea plough

The sea is home to many awe-inspiring behemoths – including human-made ones like this 35-tonne monster, which tills the seabed sowing cable

Regulars

Life

Tube worm lights up the undersea night with vitamin B

Regulars

Earth

Sardine disappearance was foreseen but ignored

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Earth

Protected areas in the ocean now exceed size of Europe

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Earth

Diving in Bermuda to find the coral reef survivors

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