Ů��С��Ƶ

NEARLY seven years after the anthrax attacks that killed five people, the US Department of Justice appears to believe we may soon have a satisfactory account of who committed them. The apparent suicide last week of Bruce Ivins, head of the programme to improve anthrax vaccine at the in Frederick, Maryland, has triggered speculation that he was about to be charged for the attacks (see “Anthrax genes point to perpetrator”). It has also fostered accusations that by pouring money into biodefence research and giving more scientists access to hazardous materials, Washington…