Where To Stream NOVA Season 39 Episode 18

Find out if modern cruise ships are really safe - or if we're on the brink of a 21st-century Titanic. Twenty million passengers embark on cruises each year, vacationing in deluxe "floating cities" that offer everything from swimming pools to shopping malls to ice skating rinks. And the ships just keep getting bigger: The average cruise ship has doubled in size in just the last ten years. Some engineers fear that these towering behemoths are dangerously unstable, and the recent tragedy of the...