By Natalie Fahey, European Institute
The most important conclusion of the United Nations Intergovernmental Panel on Climate Change’s (IPCC) Fifth Assessment Report, released today ahead of the next UN climate change conference in Warsaw, Poland in November - is that the scientific community can now say with 95% certainty that "human influence has been the dominant cause" of global warming since the mid 20th century. While previous assessment reports have drawn similar conclusions, NPR's Richard Harris remarks that the significance of the report is that it "underlines that the more scientists study this issue, the more confident they are that human activities are changing the planet."