InsideClimate: The death and destruction from three days of relentless rain in Louisiana were just coming into grim focus when a team of international climate scientists started discussing whether they could quickly assess the downpour's link to climate change. By the time their study was published less than a month later, concluding that climate change made such an extreme rain event at least 40 percent more likely in the central Gulf Coast area in 2016 compared to 1900, the storm's staggering toll was clear....