evidence: KEY TAKE AWAY: Atmospheric CO2 has increased rapidly as a result of human activities. Although human-caused emissions of CO2 are small relative to natural flows into and out of the atmosphere, the human contribution has caused an imbalance in the global carbon cycle that jeopardizes land and ocean ecosystems. Human activities have dramatically increased atmospheric CO2 levels, causing imbalances in the global carbon cycle, Edited by Nikki Forrester, Climate Review, Apr 20, 2020 [...] Human-induced increases in greenhouse gases are the primary driver of global warming, contrary to claims in CFACT article, Edited by Nikki Forrester, Climate Review, Apr 15, 2020