CIRED was founded in 1971 to explore environment development harmonization strategies, later called sustainable development. The challenge was to represent explicitly the dynamic links between economic growth regulation and the material impact of technological patterns. Working on public policy (applied to energy, waste, transport, water, food...), CIRED has dealt mainly with global environmental issues ozone, acid rain, climate change - and the pragmatic application of the precautionary principle since the late 80's. CIRED has been part of CNRS since 1979. CIRED aims at accumulating knowledge and at being an intellectual actor on the sustainable development issues.