The world’s leading scientists and world governments are to meet in Bangkok, Thailand from 30 April, ahead of the publication on 4 May of the third part of a key United Nations report on climate change. The IPCC’s Fourth Assessment report, has taken six years to compile, draws on research by 2,500 scientists from over 130 countries and should shock the world into taking urgent action to reduce global emissions.

Experts are expected to say that massive investment in renewable energy technology and energy efficiency is needed to stop greenhouse gas emissions from rising with disastrous consequences.

 This third volume "Mitigation of Climate Change" of the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report will focus on the scientific, technological, environmental, and economic aspects of mitigation of climate change.

 The first part "The Physical Science Basis", which focused on science, was published on 2 February 2007 in Paris.

 The second part "Impacts, Adaptation and Vulnerability", published on 6 April in Brussels, focused on impacts and showed that the world’s poorest people will be hit hardest by the effects of climate change.