Handle With Care

The U.S. Postal Service finally took some concrete action last week, ordering a lot of gloves and masks and a few irradiation systems for key mail-sorting facilities in Washington, New York and New Jersey. But as anthrax mail continues to pile up, so too do questions about how to protect ourselves against it. Here are some answers:

--Does zapping letters and packages with radiation really kill anthrax spores?

It depends on how the radiation is delivered. Manufacturers of food and medical irradiation equipment say tests have shown that either of two technologies--ion-beam or gamma-ray--can render the spores inoperative by crippling their...

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