The nonprofit InsideClimate News won this year’s National Reporting Pulitzer Prize for its investigative series The Dilbit Disaster: Inside the Biggest Oil Spill You’ve Never Heard Of. Reporters Elizabeth McGowan, Lisa Song and David Hasemyer took on a seven-month investigation about a 2010 oil spill in Michigan’s Kalamazoo River. The winning package consisted of a three-part narrative and follow-up articles delving deeper into the circumstances of the oil spill. “It was an important story, and we told it well through the eyes of the people who experienced it and who are investigating it,” said David Sassoon, founder and publisher of ICN. Sassoon started ICN six years ago as a blog with just two people.