When a paper in a major medical journal reported that hydroxychloroquine harmed COVID-19 patients, it made big news. But a group of Twitter sleuths uncovered evidence that not only was the paper inaccurate, but the data may even have been fabricated. How could this paper have been released in the first place? And what does it tell us about how science gets shared?
Sara Reardon is a science journalist and contributor to FiveThirtyEight. @Sara_Reardon