Mexico City (AFP) - Authorities appealed for help among Mexico's population on Thursday to locate stolen radioactive material, the latest theft of such dangerous substances in the country. The interior ministry issued an alert in five southern and eastern states late Wednesday, two days after a toolbox-sized container carrying the Iridium-192 source was snatched from a truck in a residential parking lot in Cardenas, Tabasco state. Luis Felipe Puente, the national civil protection coordinator, urged ordinary Mexicans to be on the lookout and notify the authorities right away if they find the material, which is used for industrial radiography to...