Morien Rees was Chair of the ICOM Working Group on Sustainability, which in 2023 became the International Committee on Museums and Sustainable Development, with Morien again taking up the mantle as its Chair.  ICOM SUSTAIN assists ICOM in advancing the engagement of museums with the 5Ps of the UN’s Agenda 2030.

He has worked in the Norwegian museums sector, including at the Varanger Museum on Norway’s north-eastern arctic coast, as a researcher on museums and sustainability. He studied architecture at the University of Wales and art history at the University of Oslo and has practiced architecture in the UK and Norway.

Morien is Chair of the ICOM Award for Sustainable Development Practice in Museums 2025.