Indoor Air Quality (IAQ) - Acceptable IAQ is air in which there are no known contaminants at harmful concentrations as determined by cognizant authoritiesand with which a substantial majority (80 percent or more) of the people exposed do not express dissatisfaction.

Industrial Ecology - An approach to the design of industrial products and processes that evaluates such activities through the dual perspectives of product competitiveness and environmental interactions.

IPCC – The Intergovernmental Panel on Climate Change is a UN-commissioned international working group formed in 1988. It assesses climate change and its human causes.