BBC地平线系列：英国的下一场空难？无人机

Drones are transforming our world. We use them to deliver our medicines, clean our skyscrapers and even fight fires. But there is a dark side to this airborne revolution, from a shocking rise in drone-plane near misses above our heads to last year's sustained drone disruption at Gatwick – Britain's second largest airport – that ruined the Christmas plans of 140,000 people and c... Drones are transforming our world. We use them to deliver our medicines, clean our skyscrapers and even fight fires. But there is a dark side to this airborne revolution, from a shocking rise in drone-plane near misses above our heads to last year's sustained drone disruption at Gatwick – Britain's second largest airport – that ruined the Christmas plans of 140,000 people and c...