1961 Keeling curve

The United Nations Intergovernmental Panel on Climate Change report of Monday 8 October 2018 titled “Global Warming of 1.5 °C” warns of dire consequences if world governments do not begin immediately to cut CO₂ emissions. “Human activities are estimated to have caused approximately 1.0°C of global warming above pre-industrial levels, with a likely range of 0.8°C to 1.2°C. Global warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at the current rate. (high confidence).”

See also in The book of science:

• 1840—Ice age—Louis Agassiz
• 1863—Greenhouse effect—John Tyndall
• 1896—Arrhenius equation—Svante Arrhenius

Readings in wikipedia:

• “Charles David Keeling”
• “Keeling Curve”
• “Global warming”

Other readings:

• “Global Warming of 1.5 °C,” 8 October 2018, United Nations Intergovernmental Panel on Climate Change
• “Impacts of Global Warming ,” Union of Concerned Scientists