Scientists are 95% certain that humans are responsible for climate change

Most comprehensive report on climate change ever leaves little doubt that greenhouse gases are causing the world to heat up

Scientists are more certain than they have ever been that humans are causing global warming, according to the most comprehensive report ever conducted into climate change, which predicts "with 95 per cent certainty" that people’s greenhouse gas emissions are heating the world.


This is the main finding of the UN Intergovernmental Panel on Climate Change's (IPCC) fifth assessment report, known as AR5, which was published in Stockholm this morning.
The degree of certainty leaves little doubt that greenhouse gases such as carbon dioxide and methane are responsible for climate change and compares to a finding of 90 per cent certainty in the previous - fourth - assessment six years ago. This, in turn, was a significant increase on the 66 per cent certainty reached in 2001's third assessment and just over 50 per cent in 1995.

AR5 has 840 main authors recruited from 38 of the IPCC's 195 member countries, with British and American scientists making the biggest contribution. At more than 3,000 pages, the report is so big that it will be released in three parts over the next 14 months. The first part, released today, covers the physical science of climate change. The second instalment will concentrate on the impacts of climate change and how to adapt to them, while the third will examine ways to curb the warming... read more:

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