This Sounding Board announces a new @fda policy that the default requirement for FDA approvals will be one robust pivotal trial plus confirmatory evidence, rather than two trials. Learn more Why Are So Many Studies Being Retracted? Mother Jones What a massive database of retracted papers reveals about science publishing's 'death penalty' Science AAAS When should a paper be retracted? A tale from the obesity literature Retraction Watch Checking for retractions & other quality checks on your manuscript before journal submissions some free tools scite, Zotero, Pubpeer, Scholarcy, libkey and more by Aaron Tay Academic librarians and Exclusive: retraction prone editors identified at megajournal PLoS ONE