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United States

North Korea nuclear threats: how worried should we be?

Earth

North Korea nuclear threats: how worried should we be?

Pyongyang says it will reopen a facility used to make weapons-grade plutonium and that US aggression will be countered with nuclear weapons

News

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Earth

It's too early to herald a US nuclear renaissance

Opinion

US will try anything to fight obesity and boost health

Health

US will try anything to fight obesity and boost health

News

US starts building first nuclear reactors in 30 years

Earth

US starts building first nuclear reactors in 30 years

Analysis

Pollution in US rivers is widespread and will persist

Earth

Pollution in US rivers is widespread and will persist

News

Fake caviar threatens existence of dino fish

Life

Fake caviar threatens existence of dino fish

News

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Technology

US to regulate Bitcoin currency at its all-time high

News

Brain circuits uniquely disrupted in Gulf War syndrome

Health

Brain circuits uniquely disrupted in Gulf War syndrome

News

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Technology

US patent change angers inventors

News

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Technology

The radioactive legacy of the search for plutopia

Cold war dreams of producing nuclear bombs fuelled shocking radiation experiments by US and Soviet governments, reveals Kate Brown's Plutopia

Books & Arts

Earth

Briefing: The strange science of sinkholes

News

Earth

Keystone pipeline is greenest option for tar sands

News

Space

Don't let US knee-jerk secrecy slow down space flight

Opinion

US braces for pain as 'sequester' takes its toll

News

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