Four months after the Notre-Dame cathedral in Paris went up in flames, investigators still don’t know how the fire started or whose fault it is that it wasn’t contained faster. But in July, the New York Times published an in-depth look at that fateful night on April 15, and every little thing that went wrong — from the security employee monitoring the smoke alarm panel perhaps failing to understand and accurately convey the information in the fire alert, to the church guard who went to look for the fire in the wrong part of the cathedral. The story also looks at the things that went right and prevented the entire landmark from collapsing, such as the brave firefighters thinking steps ahead of the fire, and the aftermath the country of France is now coming to terms with. Find the full story here.