I am passionate about open collaboration initiatives, exploring the challenges and opportunities around urban sustainability, and learning from and about nature.

In my work, I have been involved in a variety of initiatives and projects. I have (co-) founded a number of companies and non-profits, and my roles have included that of manager, researcher, web developer, teacher, and consultant.

Currently I am the Executive Director at the International Society for Industrial Ecology and I am involved in a number of urban metabolism teaching and research projects run by Metabolism of Cities.

I grew up in The Netherlands but spent my adult life in Nicaragua, South Africa and Colombia. I enjoy nature photography and am currently trying to learn more about the fauna and flora in the Valle de Aburrá, Colombia.