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Features

Synthetic Life

Biologists are crafting libraries of interchangeable DNA parts and assembling them inside microbes to create programmable, living machines

By W. Wayt Gibbs

Retooling the Global Positioning System

From hikers navigating with handheld locators to pilots landing in zero-visibility conditions, the Global Positioning System now serves more than 30 million users. See what's coming next

By Per Enge

Freud Returns

Neuroscientists are finding that their biological descriptions of the brain may fit together best when integrated by psychological theories Freud sketched a century ago

By Mark Solms

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