First, documentation of rising global temperatures, particularly on land.
Figure 1: Source: NOAA.Second, the weather related impacts on the US power grid.
Figure from Economic Benefits of Increasing Electric Grid Resilience to Weather Outages (August 2013).
Figure from Economic Benefits of Increasing Electric Grid Resilience to Weather Outages (August 2013).Here is one argument against human activity as a source of global climate change. A National Research Council/National Academy of Sciences perspective is discussed in this post.
This piece is cross-posted from Econbrowser with permission.