Private bunker sales are on the rise globally, from small metal boxes to crawl inside of to extravagant underground mansions. But critics say there are better ways to prepare for a nuclear threat.

Private bunker sales are booming, despite expert warnings they aren’t going to provide protection

Private bunker sales are on the rise globally, from small metal boxes to crawl inside of to extravagant underground mansions. But critics say there are better ways to prepare for a nuclear threat.