claim: The increase in atmospheric methane, a greenhouse gas, in the latter part of the 20th century was explained as coming from expansion of grazing and rice cultivation, but the cause was found to be leaking gas pipelines in the Soviet Union which are now being properly managed and maintained.
evidences.evidence_id: Atmospheric methane:187
evidences.article: Atmospheric methane
evidences.evidence: The cause of the 1998 spike is unresolved, but scientists are currently attributing it to a combination of increased wetland and rice field emissions as well as an increased amount of biomass burning.
evidences.votes: REFUTES SUPPORTS
evidences.evidence_id: Atmospheric methane:216
evidences.article: Atmospheric methane
evidences.evidence: In accordance with the IPCC and other natural gas emissions control groups, measurements had to be taken throughout the pipeline to measure methane emissions from technological discharges and leaks at the pipeline fittings and vents.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Atmospheric methane:217
evidences.article: Atmospheric methane
evidences.evidence: Although the majority of the natural gas leaks were carbon dioxide, a significant amount of methane was also being consistently released from the pipeline as a result of leaks and breakdowns.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Holocene extinction:71
evidences.article: Holocene extinction
evidences.evidence: The correlation between the decrease of CO2 in the Pleistocene and the increase of it during the Holocene implies that the causation of this spark of greenhouse gases into the atmosphere was the growth of human agriculture during the Holocene such as the anthropogenic expansion of (human) land use and irrigation.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Methane:117
evidences.article: Methane
evidences.evidence: Methane is an important greenhouse gas with a global warming potential of 34 compared to CO2 (potential of 1) over a 100-year period, and 72 over a 20-year period.
evidences.votes: SUPPORTS SUPPORTS