"The Synthesis Report", the final part of the AR4, was released in Valencia, Spain, on 17 November 2007. Earlier in 2007, the three IPCC Working Groups contributions to the AR4 were released. The three Working Groups full reports are available online (see here below). Hardcopies of the Summaries for Policymakers + Technical Summaries are available for free in the 6 UN official languages upon request to the IPCC Secretariat. Hardcopies of the full reports can be purchased from Cambridge University Press. A limited number of free copies are available for academic institutions from developing countries and countries with economies in transition upon request to the Secretariat. The full Synthesis Report will be available on the website within a few weeks.

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