Dow Agrosciences says its new GM product is based on a chemical that was once a component of the Vietnam war defoliant, Agent Orange.It is needed they say because so called "superweeds" are now affecting up to 15 million acres of American crops. (...)

The article:
http://www.bbc.co.uk/news/science-environment-19585341

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Gli ultimi sviluppi:

http://www.greenreport.it/news/inquinamenti/guerra-del-vietnam-erano-contaminati-gli-aerei-americani-che-spargevano-lagente-arancio/

Basic information:

http://en.wikipedia.org/wiki/Agent_orange

http://it.wikipedia.org/wiki/Agente_Arancio

Past...present:
http://www.fabiomanzione.it/index.php?option=com_content&view=article&id=4312:monsanto-glyphosate-resistant-kochia-confirmed-in-southern-alberta&catid=117:agricoltura&Itemid=103