It is becoming more difficult to ship radioisotopes, and if the problem increases, researchers and other users in some parts of the world may not be able to obtain them at all, according to the International Atomic Energy Agency (IAEA). Some companies that sell radioisotopes say the problem is delaying their shipments and adding to their costs.British Airways and KML Royal Dutch Airlines ban radioactive materials; Northwest Airlines bans shipments on all its passenger planes, allowing them only

Members in Iran, Cuba, and Sudan had lost E-mail because of fears of violating US embargo

Ban on editing and peer-reviewing material from embargoed nations challenged

Airlines, shipping firms refuse to carry radioactive materials, creating problems

Police in Watertown, Mass., take Brad Karger into custody for explosion at Amaranth Bio

Despite reports, police doubt Amaranth's use of adult stem cells was the motivation

Art professor charged with fraud agrees to notify court of any purchase of biologics

Artist Steven Kurtz fears further charges on bioterrorism because of his group's writings

Buffalo grand jury deliberations end with fraud allegations for ordering two bacteria

FBI questions genetics researchers and more colleagues of Buffalo art professor

Two days into hearings by a federal grand jury that is considering bioterrorism charges against a Buffalo art professor, just one of the eight colleagues of the professor subpoenaed has actually testified. Federal prosecutors may also be looking into whether another person may have illegally supplied the Escherichia coli used in one of the exhibits.Steven Kurtz, an associate professor at the Buffalo campus of the State University of New York (SUNY), is being investigated because after he called

Attorney for Steven Kurtz says FBI is 'zeroing in' on anti-bioterrorism spending message