CNN Anderson Cooper 360 May 14, 2015 03:11:00
>> yeah. ede, thank you. >> thank you. >> there are amazing stories, really survival stories that are just unbelievable. but what was the cause? and are we as safe on trains as we think we are? and joining us is author of the warnings doctor. when you see this train wreckage as we look at these live pictures right now, they're removing a lot of it what does that tell you? >> first of all, don, we know this was a perfect storm of an ant quated instrustructure and we have a possibility of human error and we don't have the technology installed -- if you think about it over 100 years ago, they had...
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