Hope this list spreads around the web...
#12 Barrick Gold Corporation
#11 Mediaset SpA
#10 Total SA
#9 Grupo Mexico SA de CV
#8 Syngenta AG
#7 Ryanair Holdings plc
#6 Occidental Petroleum Corporation
#5 Philip Morris International Inc.
#4 Freeport-McMoRan Copper & Gold Inc.
#3 Chevron Corp.
#2 Halliburton Company
#1 Monsanto Co.
So Monsanto is the WORST/least ethical company in the world, according to Covalence Ethical Ranking 2009. Monsanto seems to do whatever they want, unbelievable.
PS. Dow Chemicals is ranked 6 BEST company within it´s sector, un...f....believable #2.