Wikipedia:Today's featured article/March 8, 2005

Chemical warfare is warfare using the toxic properties of chemical substances to kill, injure or incapacitate the enemy. Chemical warfare is distinct from the use of conventional weapons or nuclear weapons because the destructive effects of chemical weapons are not primarily due to any explosive force. The offensive use of living organisms or their toxic products (such as anthrax or botulin toxin) is not considered chemical warfare: their use is instead labelled biological warfare. Chemical weapons are classified as weapons of mass destruction by the United Nations, and their production and stockpiling was outlawed by the Chemical Weapons Convention of 1993. (more...)