Researchers critical of Colossal Biosciences' de-extinction efforts claim they are the target of a coordinated online smear campaign. These scientists, who have voiced concerns about the scientific and ethical implications of reviving extinct species, report finding articles designed to damage their reputations and credibility. The source of the smear campaign remains unknown, but the timing coincides with increased scrutiny of Colossal's ambitious projects, including its plans to bring back the woolly mammoth.