Instead of creating an artificial head-related transfer function, it uses the biological one that already exists in and around the human head.

ECONOMIST: How to reproduce the ambiance of a live concert in the home

Hsinchun Chen, head of the Artificial Intelligence Lab at the University of Arizona says this technique, which he performs for American and international intelligence agencies, is an emerging and booming field.

ECONOMIST: Data mining

Previous research found artificial light caused newly-hatched turtles to head away from the sea, rather than towards it, and caused seabirds such as petrels to collide with lighthouses and other lit structures.

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Christine Williamson, head of the pressure group Silicon Support UK, said artificial implants had ruined the health of many women.

BBC: Breasts