FEATURE: The Earth entered uncharted territory when CO2 levels hit 400ppm for the first time. So what does the milestone mean?
Chinese government objected to scientists including carbon budget in IPCC Summary for Policymakers, documents reveal
The blockbuster science report of the decade is out, bringing with it an urgent message on the state of the planet
Thomas Stocker says world still has a choice whether to avoid climate-related catastrophe and keep warming below 2C