On the seventieth anniversary of the first summit of Mount Everest, Ellie Harrison is put through her paces at a materials research facility, including a cold chamber that reaches -40 Celsius. Show more
Discover 11,128,835 listings and 279,634 playable programmes from the BBC
On the seventieth anniversary of the first summit of Mount Everest, Ellie Harrison is put through her paces at a materials research facility, including a cold chamber that reaches -40 Celsius. Show more