Timeline: A history of sarin

POSTED: 02:01 AM PST Dec 24, 2013    UPDATED: 08:24 AM PDT Sep 16, 2013 
scientist doing experiment, medicine, chemistry

A United Nations report due out Monday is expected to say say the perpetrators of last month's chemical weapons attack in Syria had up to 350 liters of sarin gas Look back at the history of sarin, a man-made nerve agent.