Titan sub search leaves many asking: Who will foot the bill?

An undated photo shows tourist submersible belongs to OceanGate begins to descent at a sea. (Photo by Ocean Gate / Handout/Anadolu Agency via Getty Images) In recent days, the massive hunt for a submersible vehicle lost during a north Atlantic descent to explore the wreckage of the Titanic has refocused attention on that conundrum.

And with rescuers and the public fixated first on saving and then on mourning those aboard, it has again made for uneasy conversation.READ MORE: What the Titanic sub saga and the Greek migrant shipwreck say about our reactions to tragedy"Five people have just lost their lives and to start talking about insurance, all the rescue efforts and the cost can seem pretty heartless — but the thing is, at the end of the day, there are costs," said Arun Upneja, dean of Boston University’s School of Hospitality Administration and a researcher on tourism."There are many people who are going to say, ‘Why should the society spend money on the rescue effort if (these people) are wealthy enough to be able to ...

engage in these risky activities?’"That question is gaining attention as very wealthy travelers in search of singular adventures spend big to scale peaks, sail across oceans and blast off for space.An investigation is underway to determine why the Titan submersible imploded, killing five people on board, while traveling to the wreckage of the Titanic.

Arun Bansil at Northwestern University spoke with LiveNOW from FOX's Josh Breslow to break down how an implosion happens and how it differs from an explosion.The U.S.