English Abstract The MATTER project (MATerials Technologies for
greenhouse gas Emission Reduction) is a joint project of five Dutch
institutes within the framework of the National Research Programme on Global
Air Pollution and Climate Change that focuses on the potential to reduce GHG
emission in the life cycle of materials. The goal of this "Factor 2/Factor
10" MATTER workshop was to indicate the potential of materials strategies
for GHG emission reduction. Five papers were presented, one focusing on
integrated systems calculations with the MARKAL model, three on product
groups (passenger cars, packagings, and building and infrastructure) and one
on a materials group (metals). Together these case studies cover a
significant part of the total materials production and materials use. The
title of the workshop "Factor 2/Factor 10" refers to the widely accepted
notion that a factor 2 emission reduction is possible with technological
improvements, while a factor 10 cannot be achieved through technological
improvements alone. The case studies intend to put this hypothesis to the
test.
