An intensive dialogue was also activated by contributions from:
- Cees-Jan Adema | PepsiCo International, Chair European Beverage Association, The Netherlands
- Prof. Adisa Azapagic | Manchester University, UK
- Matthew Bateson | World Business Council for Sustainable Development
- Jacob Bilabel | Thema1, Germany
- Pavel Misiga | DG Environment, EU Commission
- Sylvain Chevassus | Environmental Ministry, France
- Carrina Gaffney | Eco:Metrics The Guardian, UK
- Anne Gaasbeek | Dutch Horticulture Board, The Netherlands
- Björn Hannappel | Deutsche Post DHL, Germany
- Stephen Heal | Sustainable Consumption Institute, UK
- Prof. Atsushi Inaba | Carbon Footprint Program, Japan
- Gyusoo Joe | Korea Environmental Industry and Technology Institute, South Korea
- Jürgen Knirsch | Greenpeace, Germany
- Thomas Kützemeier | mcongressconsult, Germany
- Euan Murray | Carbon Trust, UK
- Prof. Adriaan Perrels | Climate Bonus Project, Finland
- Rita Schenck | American Center for Life Cycle Assesment, USA
- Rasmus Priess | PCF World Forum, Germany
- Luke Upchurch | Consumers International, UK
- Heleen van Kernebeek | Wageningen University, The Netherlands
- Fokko Wientjes | DSM, The Netherlands