Looking back, nine years ago this week, when Hurricane Katrina landed on the Gulf Coast, making a mockery of the federal levees in the process, the looming question is, What did we learn? We want to know the same about Superstorm Sandy, which struck the East Coast two years ago. Fortunately, there are quite a number of films and documentaries that show and tell the lessons from these tragedies, which collectively claimed over 2,000 lives and caused roughly $170 billion in damage.

Today, you can find the synthesis of those lessons in a new multimedia project called Katrina/Sandy, an interactive web timeline of the disasters. Videos are assembled across a narrative arc that spans from the storms themselves, to the immediate aftermath, through the rebuilding stages, and then landing on questions about the future. It was produced by filmmakers Luisa Dantas, whose Land of Opportunity project has been gathering the stories of New Orleans communities recovering in post-crisis mode over the last eight years; and the Sandy Storyline team of Rachel Falcone and Michael Premo, who’ve both worked with award-winning oral history projects like StoryCorps and EarSay, Inc.

“After Katrina, the world was shocked by the devastation, the inequity, and the government’s incompetent response,” Dantas says. “As documentary media producers, we wondered what we can learn by placing stories and scholarship from Katrina and Sandy side-by-side.”