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IPCC report: Scientists are 95% certain humans causing 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.
As with the other IPCC reports, AR5 is a synthesis of the findings of thousands of peer-reviewed
research papers from the past few years. It comes at a crucial time in global climate change politics
since it will be the last IPPC report published before the Paris summit in 2015, when the world's
governments have pledged to reach a hugely ambitious and legally binding targets to reduce their
emissions in a bid to limit global warming to 2C compared to pre-industrial levels.
US Secretary of State John Kerry backed the report's findings, and pledged action on cutting emissions.
Full story Independent.