Thanks to major strides in technology, engineers are able to build such massive structures as giant tankers, mammoth skyscrapers and breathtaking bridges. With such enormous size come equally daunting risks, however, and when big things go wrong, they go really, seriously wrong. This new original docuseries looks at some of the world’s worst real-life engineering disasters and seeks an answer to the question of what caused the calamity. News footage is interwoven with innovative and illuminating graphics, eyewitness accounts and commentary from experts.