The European Commission has open a public consultation on the best way to reduce the usage of plastic bags. More concretely, this consultation is asking about the efficacy of the measures based on the assignation of prices and taxes as well as the possibility to reduce the plastics bag on the European Union. This consultation is open till 09.08.2011.
To answer the consultation: http://ec.europa.eu/environment/consultations/plasticbags_en.htm
source: http://www.wasman.eu