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United States

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Earth

US still responsible for most CO2 emissions

Europeans import nearly twice as much carbon dioxide per head as US citizens – but the US is still the world's largest emitter

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The US is lagging on nuclear reactor technology

Earth

The US is lagging on nuclear reactor technology

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Beyond torture: The future of interrogation

Life

Beyond torture: The future of interrogation

Features

Inside the biggest tornado hunt in history

Earth

Inside the biggest tornado hunt in history

Features

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Earth

Utah alleges conspiracy on climate change data

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Back to the drawing board with missile-beating laser

Technology

Back to the drawing board with missile-beating laser

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Technology

Skeleton sliders hurtle down test track without moving

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Iran showing fastest scientific growth of any country

Iran showing fastest scientific growth of any country

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Earth

New US reactors still awaiting safety approval

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Space 2020: what NASA will do next

Space

Space 2020: what NASA will do next

Big changes are afoot in the US space programme. What will it look like a decade from now?

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Space

A turning point for space exploration

Opinion

Health

Stop patents on diagnostic genes, says US panel

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Earth

US budget gives nuclear power a yea and big oil a nay

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Life

US babies mysteriously shrinking

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