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Physics

Airborne laser ready for flight tests

The US military's missile-defence laser is taking to the air for its first full-power try-out

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Long-range Taser reignites safety debate

Environment

Lasers keep submarines in touch through the big blue

Humans

Earliest fired knives improved stone age tool kit

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Microwave weapon will rain pain from the sky

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Is your city prepared for a home-made nuke?

Technology

Military mega-lasers are too hot to handle

Technology

Timeline: Weapons technology

Technology

Bombers vs verifiers: A nuclear race worth winning

Technology

Laser weapon dazzles but doesn’t blind

A new type of laser device being developed by the Pentagon will let military personnel force drivers to a halt without harming their eyesight

Technology

Plan to teach military robots the rules of war

Technology

Radio-controlled bullets leave no place to hide

Earth

North Korea’s nuke test could have positive outcome

Life

Harnessing science to create the ultimate warrior