Explore the stories behind the biggest storm to hit New York in living memory. How a freak combination of natural events led to life-changing experiences for those in its path — the YouTube generation who watched trees being uprooted, cars swept away and whole neighborhoods on fire. We take apart the science behind this massive clash of weather systems, showing what happens when a tropical hurricane slams into a freezing cold front, over the most densely populated region in America. Is it just the start of a nightmare scenario facing the world’s population, in a changing climate?