claim: Some experts think we’re on track to hit 550 ppm by the end of the century, which would cause average global temperatures to rise by 6 degrees Celsius
evidences.evidence_id: 20th century:6
evidences.article: 20th century
evidences.evidence: The average global temperature on Earth has increased by about 0.8° Celsius (1.4° Fahrenheit) since 1880; Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20 °C per decade.
evidences.votes: SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Global warming:22
evidences.article: Global warming
evidences.evidence: Currently, surface temperatures are rising by about 0.2 °C per decade.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Global warming:7
evidences.article: Global warming
evidences.evidence: Climate model projections summarized in the report indicated that during the 21st century the global surface temperature is likely to rise a further 0.3 to 1.7 °C (0.5 to 3.1 °F) in a moderate scenario, or as much as 2.6 to 4.8 °C (4.7 to 8.6 °F) in an extreme scenario, depending on the rate of future greenhouse gas emissions and on climate feedback effects.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Greenhouse gas:547
evidences.article: Greenhouse gas
evidences.evidence: The oft-cited Mauna Loa average for 2012 is 393.8 ppm, which is a good approximation although typically about 1 ppm higher than the spatial average given above.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Nuclear holocaust:4
evidences.article: Nuclear holocaust
evidences.evidence: In one model, the average temperature of Earth following a full thermonuclear war falls for several years by 7 to 8 degrees Celsius (13 to 15 degrees Fahrenheit) on average.
evidences.votes: REFUTES REFUTES