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The document reports that winter is the fastest warming season for most of the U.S., leading to a general decrease in fall and spring snowfall between 1970 and 2019. It details regional impacts, such as a 15-30% reduction in snow-derived freshwater in the Western U.S. since 1955, a shift toward rain over snow in the Northeast, and a shortened lake effect snow season in the Great Lakes region. These changes threaten water security for agriculture and municipalities, increase wildfire and drought risks, and negatively impact the winter recreation industry.

The report warns that South Africa is on a 'worst-case' climate trajectory (RCP 8.5), which will lead to extreme heat, water scarcity, and food insecurity, disproportionately harming youth. It details regional collapses in agriculture and tourism, the expansion of informal settlements due to climate-induced migration, and the severe mental health trauma facing children. The author argues that without a rapid phase-out of fossil fuels, large parts of the country may become uninhabitable, leading to systemic social conflict and economic collapse.