The media has rightly been questioning whether or not Ivins knew how to dry anthrax. And his colleagues are right to question whether Ivins, a vaccine expert, could have made anthrax as pure and concentrated as the killer anthrax (for example, a former director of the bacteriology division at Ft. Detrick said the anthrax sent to Daschle was "so concentrated and so consistent and so clean that I would assert that Bruce could not have done that part").
But the media is missing another large part of the story . . . it is very doubtful that Ivins knew how to weaponize the anthrax spores with advanced anti-clumping agents.