One quantifying technique that I’ve found to be quite useful is to follow SDMs - Sustainable Development Metrics. Basically a few different ways to measure how you or an organization uses its resources and manages waste. A nice outline of the metrics can be found in this blog post http://www.justmeans.com/Sustainable-Development-Metrics-Quantifying-Sustainability/23297.html Other than that there are some very easily quantifiable carbon footprint measures such as paperless communication and how it affects deforestation, also using videoconferencing instead of flying for international meetings: http://www.lifesize.com/en/Gallery_and_Resources/Our_Green_Approach/Reduce_Travel_Costs_and_CO2.aspx