Commercial companies offering adventures to the ends of the Earth - and beyond - are attracting billions of dollars annually. Some of the dangers have been exposed by the plight of the five men onboard the Titan submersible that went missing. So are these multi-billion-dollar industries contributing to science? And are they a benefit to society?

Join host Folly Bah Thibault.

Guests:

Victor Lund Shammas, Head of Department, Sociology and Social Work, University of Agder, Norway

Elizabeth Pearson, Features Editor, Sky at Night Magazine. Space journalist