By Carey King
The Journal of Industrial Ecology has a special issue on Meta-Analysis of Life Cycle Assessments (LCAs) freely available online.
There are several articles discussing what we can and cannot learn from making and comparing as many LCAs as possible. One of the introductory articles is: What Can Meta-Analyses Tell Us About the Reliability of Life Cycle Assessment for Decision Support? (Miguel Brandão, Garvin Heath and Joyce Cooper).