Air date: 1995-06-09

Runtime: min

They're emerging, host Bill Kurtis says, "as one of the greatest threats of the next millennium." Included: speculation on biological-warfare scenarios; a look at various types of biological weapons; a history of germ warfare and efforts to control it.

Air date: 1995-11-17

Runtime: min

This A&E documentary deals with train safety at railroad crossings, deadly train crashes and major railroad accidents.