Author: 

Roger Highfield, director of external affairs at the Science Museum

Additional author info: 

Roger Highfield, a former editor of New Scientist, is director of external affairs at the Science Museum

The 3D printer is threatening to change the world in ways we can barely imagine

A 3D printer in action: building up a toy robot one layer of plastic at a time. Photo: Tobias Hase/DPA/Corbis

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