A white powder discovered on the dashboard of an unlocked car in Bethesda does not contain anthrax spores, and agents are investigating the case as a possible Halloween hoax, the FBI said yesterday.

The FBI says Bruce Ivins acted alone when he sent letters containing anthrax in the mail, killing five people. Some wonder if ...

BOSTON — The powder found in threatening letters received Wednesday by at least 11 Massachusetts police stations is not anthrax, state health officials said, dispelling fears of a new letter-borne ...

ATLANTA — White powder in a bag found at the U.S. Army Reserve Command headquarters building at Ft. McPherson was not anthrax, an Army spokesman said. Field tests shortly after the bag was found ...

Dr. Ron Atlas is the co-chair of the American Society for Microbiology's task force on biological weapons. He is a professor of biology at the University of Louisville and the dean of the graduate ...

President Obama was at the center of an Anthrax scare after white powder was mailed to his offices in Washington Tuesday. Just a day after his official portrait was unveiled, police responded to ...

The FBI's expert on counterterrorism acknowledged Tuesday that much about the tainted anthrax letters of recent weeks, including who is responsible, remains a mystery -- a fact he called ...

The latest batch of potential anthrax specimens has just arrived on a metal cart in the corridor of the Maryland state microbiology lab. Some are in plastic biohazard bags. Others are in what look ...

A powder discovered leaking out of an envelope Tuesday night at the Jamestown post office - which caused curtailing of post office operations for a couple hours in Bismarck - isn't anthrax. Test ...

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