Where To Stream City in the Sky Season 1 Episode 3

There are around one million people airborne at any one time. But what goes up must come down - and bringing all those people safely back to earth depends on complex global networks and astonishing technology that stretches our ingenuity to the absolute limit. In this programme, science broadcaster Dallas Campbell and Dr Hannah Fry explore just what it takes to bring the citizens of the sky back to the ground. Dallas has a front row seat when he is in the cockpit with one of just 26 pilots in...