KNX In Depth's Charles Feldman and Rob Archer discuss the possible motivations for people to pay lots of money to go on deep sea journeys, trips to the edge of space and to the top of big mountains. Philip Ballard is a travel expert with HotelPlanner.com.

<p>KNX In Depth's Charles Feldman and Rob Archer discuss the possible motivations for people to pay lots of money to go on deep sea journeys, trips to the edge of space and to the top of big mountains. Philip Ballard is a travel expert with HotelPlanner.com.</p>

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