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Google acquires military robot-maker Boston Dynamics

16 December 2013 Last updated at 11:56 GMT

Secrecy is surrounding Google's latest acquisition of the engineering company Boston Dynamics.

The firm, which builds robots for the US military, is led by former Android boss Andy Rubin.

Both the price and size of the project is unknown.

Aaron Heslehurst spoke to Rory Cellan-Jones.