Nearly two dozen journals from two of the fastest growing open-access publishers, including one of the world’s largest journals by volume, will no longer receive a key scholarly imprimatur. On 20 March, the Web of Science database said it delisted the journals along with dozens of others, stripping them of an impact factor, the citation-based measure of quality that, although controversial, carries weight with authors and institutions. . . . Clarivate initially did not name any of the delisted journals or provide specific reasons. But it confirmed to Science the identities of 19 Hindawi journals and two MDPI titles after reports circulated about their removals.