Claim:  As it happens, the writer of that October 2009 e-mail—Kevin Trenberth, a lead author of the warmist bible, the 2007 Intergovernmental Panel on Climate Change (IPCC) report—told Congress two years ago that evidence for manmade warming is "unequivocal.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: IPCC AR5 WG1 Summary for Policymakers 2013, p. 4: Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: He was a lead author of the 2001 and 2007 IPCC Scientific Assessment of Climate Change (see IPCC Fourth Assessment Report) and serves on the Scientific Steering Group for the Climate Variability and Predictability (CLIVAR) program.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In October 2009, the leaders of 18 US scientific societies and organizations sent an open letter to the United States Senate reaffirming the scientific consensus that climate change is occurring and is primarily caused by human activities.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Retrieved 2010-08-28. the leading international network of climate scientists has concluded for the first time that global warming is 'unequivocal' and that human activity is the main driver, 'very likely' causing most of the rise in temperatures since 1950 Stevens, William K. (2007-02-06).

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The New York Times reported that "the leading international network of climate scientists has concluded for the first time that global warming is 'unequivocal' and that human activity is the main driver, 'very likely' causing most of the rise in temperatures since 1950".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Warming 'very likely' human-made".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Evidence is now 'unequivocal' that humans are causing global warming – UN report".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Evidence for warming accumulated.

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Passage: The 2008 NIPCC document titled "Nature, Not Human Activity Rules the Climate: Summary for Policymakers of the Report of the Nongovernmental International Panel of Climate Change", published by The Heartland Institute, was released in February–March 2008.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: ...Dr. James E. Hansen of the National Aeronautics and Space Administration told a Congressional committee that it was 99 percent certain that the warming trend was not a natural variation but was caused by a buildup of carbon dioxide and other artificial gases in the atmosphere.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: In a speech given to the US Senate Committee on the Environment and Public Works on July 28, 2003, entitled "The Science of Climate Change", Senator James Inhofe (Republican, for Oklahoma) concluded by asking the following question: "With all of the hysteria, all of the fear, all of the phony science, could it be that man-made global warming is the greatest hoax ever perpetrated on the American people?

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The controversy has focused on a small number of emails with "climate sceptic" websites picking out particular phrases, such as one in which Kevin Trenberth said, "The fact is that we can’t account for the lack of warming at the moment and it is a travesty that we can’t".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Kevin E. Trenberth of the National Center for Atmospheric Research said that he was appalled at the release of the emails but thought that it might backfire against climate sceptics, as the messages would show "the integrity of scientists".