Claim: Humans are too insignificant to affect global climate.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In order to constitute the Holocene as an extinction event, scientists must determine exactly when anthropogenic greenhouse gas emissions began to measurably alter natural atmospheric levels on a global scale, and when these alterations caused changes to global climate.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Human impact on the environment or anthropogenic impact on the environment includes changes to biophysical environments and ecosystems, biodiversity, and natural resources caused directly or indirectly by humans, including global warming, environmental degradation (such as ocean acidification), mass extinction and biodiversity loss, ecological crisis, and ecological collapse.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Humans have had a dramatic effect on the environment.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Currently, through land development, combustion of fossil fuels, and pollution, humans are thought to be the main contributor to global climate change.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Rennie 2009: "Claim 1: Anthropogenic CO2 can't be changing climate, because CO2 is only a trace gas in the atmosphere and the amount produced by humans is dwarfed by the amount from volcanoes and other natural sources.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Anthropocene ( ) is a proposed geological epoch dating from the commencement of significant human impact on Earth's geology and ecosystems, including, but not limited to, anthropogenic climate change.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Anthropogenic climate change is caused by human activity, as opposed to changes in climate that may have resulted as part of Earth's natural processes.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Cumulative anthropogenic (i.e., human-emitted) emissions of CO 2 from fossil fuel use are a major cause of global warming, and give some indication of which countries have contributed most to human-induced climate change.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Some of the main human activities that contribute to global warming are:

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Human activities (anthropogenic greenhouse gas emissions) have already contributed of warming.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The balance of evidence suggests a discernible human influence on global climate (considerable progress since the 1990 report in distinguishing between natural and anthropogenic influences on climate, because of: including aerosols; coupled models; pattern-based studies) Climate is expected to continue to change in the future (increasing realism of simulations increases confidence; important uncertainties remain but are taken into account in the range of model projections) There are still many uncertainties (estimates of future emissions and biogeochemical cycling; models; instrument data for model testing, assessment of variability, and detection studies) The Third Assessment Report (TAR) was completed in 2001 and consists of four reports, three of them from its Working Groups: Working Group I: The Scientific Basis Working Group II: Impacts, Adaptation and Vulnerability Working Group III: Mitigation Synthesis Report A number of the TAR's conclusions are given quantitative estimates of how probable it is that they are correct, e.g., greater than 66% probability of being correct.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Sun's Shifts May Cause Global Warming".