claim: Therefore human emissions upset the natural balance, rising CO2 to levels not seen in at least 800,000 years.
evidences.evidence_id: Carbon dioxide in Earth's atmosphere:140
evidences.article: Carbon dioxide in Earth's atmosphere
evidences.evidence: While CO 2 absorption and release is always happening as a result of natural processes, the recent rise in CO 2 levels in the atmosphere is known to be mainly due to human (anthropogenic) activity.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Carbon dioxide:186
evidences.article: Carbon dioxide
evidences.evidence: Human activities have caused CO 2 to increase above levels not seen in hundreds of thousands of years.
evidences.votes: SUPPORTS SUPPORTS SUPPORTS SUPPORTS
evidences.evidence_id: Carbon dioxide:3
evidences.article: Carbon dioxide
evidences.evidence: The current concentration is about 0.04% (410 ppm) by volume, having risen from pre-industrial levels of 280 ppm.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Global warming:62
evidences.article: Global warming
evidences.evidence: These levels are much higher than at any time during the last 800,000 years, the period for which reliable data have been collected from ice cores.
evidences.votes: SUPPORTS SUPPORTS SUPPORTS SUPPORTS
evidences.evidence_id: Greenhouse gas:244
evidences.article: Greenhouse gas
evidences.evidence: The sharp acceleration in CO 2 emissions since 2000 to more than a 3% increase per year (more than 2 ppm per year) from 1.1% per year during the 1990s is attributable to the lapse of formerly declining trends in carbon intensity of both developing and developed nations.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO