A man who may have been exposed to toxic ricin in his motel room a month ago has regained consciousness and was being questioned by investigators, authorities said Friday. Roger Bergendorff, 57, ...

WASHINGTON (AP) – Ever since the anthrax and terrorist attacks of Sept. 11, 2001, the poison ricin has at times been lumped in with other bioterrorism agents because it comes from a relatively common ...

Federal investigators have examined about 20,000 pieces of mail in hopes of finding the source of the ricin that was discovered Feb. 2 on Capitol Hill but have turned up nothing to lead them to a ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE — In this April 4, 1996 file photo Theodore John Kaczynski is flanked by federal agents as he is led to a car from the ...