One of the world's biggest sports broadcasters has announced it will soon screen drone races.

ESPN will start with a three-day International Drone Racing Association event held in New York running between 5 and 8 August.

It said it believes the activity is "poised to become the next behemoth racing sport alongside Nascar and Formula 1".

The BBC's technology correspondent Rory Cellan-Jones met one of the young stars of sport.

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