Climate Progress Joe Romm's blog at the Centre for American Progress Action Fund. Described by New York Times columnist Tom Friedman as 'indispensible'.

Geoffrey Lean, the British award-winning pioneer of environmental journalism. Read his blog by clicking here.

The 350 Campaign focuses on building the political will to commit to the 350ppm (parts per million) atmospheric CO₂ target. 350ppm is the safe upper limit of CO₂, and represents the ethical line that has been drawn, and around which political will needs to be built. 350 Campaign coordinator Rishab Kanna was a convenor for the Caux 2009 conference on Trust and Integrity in the Global Economy, held in Caux, Switzerland in July.

The Earth Charter Initiative promotes the transition to sustainable ways of living and a global society founded on a shared ethical framework that includes respect and care for the community of life, ecological integrity, universal human rights, respect for diversity, economic justice, democracy, and a culture of peace.

IPCC - Intergovernmental Panel on Climate Change. The IPCC assesses the scientific, technical and socio-economic information relevant for the understanding of the risk of human-induced climate change.

The Global Humanitarian Forum was founded in 2007 by Kofi Annan and Swiss Foreign Minister (and then President), Micheline Calmy-Rey as an independent and impartial international platform for addressing humanitarian concerns. Climate change is a major focus.

Skeptical Science is a website dedicated to questioning the 'science' of those who are global warming sceptics. A good place to send anyone who doubts whether current global warming is caused by humans, or whether we can do anything about it.