Main content
Cave scientist Penny Boston: Why I hugged a hot mega-crystal. Photo by M. Spilde
Penny describes her emotional reaction to having to leave the Naica cave system in Mexico, where the largest crystals on earth dwell in 50 degrees centigrade heat, 300 metres underground.
Duration:
This clip is from
More clips from The Forum
-
![]()
What are the origins of the open plan office?
Duration: 03:44
-
![]()
The birth of the pill
Duration: 04:46
-
![]()
1930 World Cup highlights
Duration: 03:46
-
![]()
Moths: the story of the butterfly of the night
Duration: 04:41
