IPCC: Publications section of the website of the Intergovernmental Panel of Climate Change. The IPCC is the world’s leading authority on climate change, producing reports which have the agreement of all the leading climate scientists and the consensus of every one of the participating governments. In its six-yearly ‘Assessment Report’, available freely on the website, the IPCC synthetizes the latest scientific research on climate change. The most recent report – Assessment Report 4: Climate change 2007 – was released in 2007, but its follower – Assessment Report 5 – is expected in September 2013. The IPCC has also released ‘special reports’ on - among others - renewable energy, carbon capture and storage, and land-use change.
United Nations climate change portal: Website of the United Nations providing a clear, understandable overview of the climate change issues with extensive referencing to the IPCC reports.
EEA: Publication section of the website of the European Environment Agency. It includes many authoritative reports on environmental issues, including series on GHG emissions trends and projections, energy and environment, climate impact and trends, and the EU GHG Inventory.
IEA: The International Energy Agency produces around 100 reports a year on the issues of energy security, climate change and economic development. The IEA's data is regarded as the gold standard in emissions and energy, and is widely regarded as one of the most conservative in climate change outlook and renewable energy projections.
The Climate System - Columbia University Course: Many of the course materials of this course lectured at Columbia University are freely available on the web, providing educational information on the scientific basis of our climate system, the greenhouse effect and the radiation balance of the Earth.
Climate change 101: A general introduction to climate change, covering climate science and impacts, climate adaptation, technological solutions, business solutions, international action, federal action, recent action in the U.S. states, and action taken by local governments.
USCD Keeling Curve: Follow the most recent (daily!) changes of CO2 concentrations recorded at Mauna Lao in Hawaii.
CARBON OFFSETTING AND CARBON MARKETS
WWF on carbon offsetting: No room for greenwashing.
CDM Gold Standard: Website of the Gold Standard, which offers one of the most credible certification standards (CDM Gold Standard and Voluntary Gold Standard) for carbon mitigation projects.
The Offsetting Handbook: Carbon offsetting explained extensively by the Gold Standard Foundation.
The Carbon Trust three stage approach to developing a robust offsetting strategy: Information guide by the Carbon Trust on carbon markets, carbon offsets, carbon neutrality, and developing a robust offsetting strategy.
CO2 Offsetting: explained in 2 minutes by CO2logic.
CO2logic / NGO Nouvel Arbre climate & woodstove projet in Burkina Faso: avoid deforestation in Burkina Faso.
WWF carbon offset project: small stoves safe the giant panda.
How does carbon offsetting work - Adam Hart-Davis. An entertaining short educational film on carbon offsetting. By BP
James Hansen: Why I must speak about climate change. In this Ted Talk, top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change.