Figure 1: Climatic events that changed the course of human history in the deep past, especially solar strength and Atlantic ice rafting
Figure 2: Various measures of global health and economy show a sharp increase around the time of the Industrial Revolution, mirrored by rising levels of CO2 and methane in the atmosphere
Figure 3: Major changes to global climate measures before and during the Holocene period, highlighting CO2 and sea levels
The maximum extent of glacial ice in the north polar area during the Pleistocene era
Source: U.S. Geological Survey
Weather conditions caused by El Niño-Southern Oscillation (ENSO) and La Niña conditions
Source: National Oceanic and Atmospheric Administration
