claim: Current CO2 levels are the highest in 15 million years.
evidences.evidence_id: Carbon dioxide in Earth's atmosphere:24
evidences.article: Carbon dioxide in Earth's atmosphere
evidences.evidence: The current concentration may be the highest in the last 20 million years.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Carbon dioxide in Earth's atmosphere:8
evidences.article: Carbon dioxide in Earth's atmosphere
evidences.evidence: The present concentration is the highest for 14 million years.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Greenhouse gas:103
evidences.article: Greenhouse gas
evidences.evidence: However, various proxies and modeling suggests larger variations in past epochs; 500 million years ago CO 2 levels were likely 10 times higher than now.
evidences.votes: NOT_ENOUGH_INFO REFUTES
evidences.evidence_id: Greenhouse gas:111
evidences.article: Greenhouse gas
evidences.evidence: Carbon dioxide mole fractions in the atmosphere have gone up by approximately 35 percent since the 1900s, rising from 280 parts per million by volume to 387 parts per million in 2009.
evidences.votes: NOT_ENOUGH_INFO REFUTES
evidences.evidence_id: Greenhouse gas:127
evidences.article: Greenhouse gas
evidences.evidence: Measured atmospheric concentrations of carbon dioxide are currently 100 ppm higher than pre-industrial levels.
evidences.votes: NOT_ENOUGH_INFO REFUTES