GLAM – The Global Impact Assessment Method

GLAM is the Global Impact Assessment Method developed via a science-based consensus process within the Life Cycle Initiative hosted by the United Nations Environmental Programme-UNEP. It is a comprehensive, consistent and global Environmental Life Cycle Impact Assessment Method, covering classification, midpoint and damage characterisation, normalisation and weighting, in order to assess the life cycle impacts of products and services on human health, ecosystem quality and socio-economic assets. This version is a beta version and is not intended to be cited. 08/11/2025: First beta-release of midpoint characterization factors and of updated damage characterization factors