Every day, more than 7,500 aircraft crowd into Britain's skies, carrying more than half a million passengers from every corner of this little green planet, all following their own secret motorway system in the sky.

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Story: Secret Jams Above Us

Duration: 2:59

Every day, more than 7,500 aircraft crowd into Britain's skies, carrying more than half a million passengers from every corner of this little green planet, all following their own secret motorway system in the sky.

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