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The document argues that commercial insect farming in high-income northern hemisphere countries often fails to deliver its theoretical environmental benefits. It notes that greenhouse gas emissions from insect protein can approach those of chicken and pork, and that the industry often supports conventional animal agriculture by providing feed rather than replacing meat in human diets. Additionally, the report highlights risks to biodiversity, animal welfare concerns, and the opportunity cost of diverting investment from other alternative proteins like plant-based or cultivated options.

Analysis of 232 U.S. cities shows that 91% have experienced a long-term decrease in freezing nights since 1970, with an average reduction of 15 nights. This trend is most pronounced in the West, Northeast, and Southwest, and is attributed to climate change driven by the burning of fossil fuels. While fewer freezing nights may reduce acute cold-exposure risks and home heating costs, the trend threatens snow-fed water supplies, winter recreation economies, and fruit crop yields that require winter chill, while potentially expanding the range of disease-carrying pests.

The report finds that climate change is significantly increasing the number of 'lost winter days' (days above freezing) across Canada, with some regions seeing an additional week of such days annually. The analysis highlights specific impacts in provinces like Prince Edward Island and Nova Scotia, and major cities including Vancouver, Toronto, and Montreal, noting consequences for snow accumulation, ice coverage, and winter industries.

Analysis by Climate Central indicates that Denmark experienced an average of three additional weeks of winter days above freezing annually between 2014 and 2023 due to climate change. Denmark ranks fourth globally among 123 analyzed countries for the most additional winter days above freezing. In Copenhagen, climate change added at least 25 winter days above freezing each year compared to a scenario without climate change.

Climate change has led to a significant increase in 'lost winter days' across France, with the country experiencing at least 10 additional days above freezing annually over the last decade. This trend affects snowfall, winter sports, and ecosystems, with the Grand Est region seeing the highest increase of 14 additional days per year.

Analysis of daily minimum temperatures from 2014 to 2023 shows that Germany experienced more than two additional weeks of days above freezing annually due to climate change. This trend was observed across all six analyzed German cities, with Munich seeing the highest increase at 24 additional days per year. These 'lost winter days' impact snowfall, winter sports, water supplies, crops, and ecosystems.

Climate change is significantly increasing the number of winter days with minimum temperatures above 0°C across the Northern Hemisphere. Analysis of the decade 2014-2023 shows that over one-third of analyzed countries and 44% of analyzed cities experienced at least one additional week of above-freezing days annually. Europe is the most affected region, with some countries like Lithuania and Latvia seeing over 20 additional above-freezing days per year. These shifts impact snowfall, the USD 12.5 billion winter sports industry, water supplies, and ecosystem health.

Analysis of Italian cities from 2014-2023 shows a significant increase in 'lost winter days' (days above 0°C), with Turin ranking as the third city globally for the most added winter days above freezing.

Analysis of daily minimum temperatures in Japan from 2014 to 2023 indicates that climate change has added at least eight winter days above freezing annually across the country. In 32 of 57 analyzed Japanese cities, this increase amounted to at least two additional weeks of days above freezing per year. These 'lost winter days' impact snowfall, water supplies, crops, and winter sports.

The analysis finds that Norway experienced at least one additional week of winter days above freezing annually from 2014 to 2023 due to climate change. Approximately 80% of Norway's divisions saw more than one additional week of such days each year. The report notes that this loss of winter chill impacts snowfall, winter sports, water supplies, crops, and spring allergies.

Climate change has significantly increased the number of winter days above freezing in Poland, with the country ranking fifth globally for the most lost chilled winter days. Between 2014 and 2023, Poland experienced nearly three additional weeks of days above freezing annually, with all 13 analyzed cities seeing at least two additional weeks per year.

The analysis finds that Spain experienced an average of eight additional days above freezing annually during the winter months of December, January, and February from 2014 to 2023 due to climate change. This trend affected 62% of Spanish provinces, with the highest increases observed in provinces such as León, which saw 17 additional days above freezing annually. The report highlights that these 'lost winter days' impact snowfall, water supplies, crops, and winter sports.

The analysis finds that climate change has increased the number of winter days with minimum temperatures above 0°C across the United Kingdom, with a national average of 11 additional days per year. England experienced the highest increase with 12 additional days, followed by Scotland and Wales with 10, and Northern Ireland with 8.

The document explains that fall foliage is driven by day length, temperature, and rainfall, all of which are being altered by climate change. While the effects are complex and vary by species and latitude, warming fall nights and increased weather extremes like drought and wildfires are disrupting traditional leaf cycles. This has implications for both the tourism economy and the capacity of forests to sequester carbon.

The Great Lakes have seen a 25% decrease in basin-wide ice cover since 1973, with all five lakes experiencing shorter ice durations. This trend, mirrored across the Northern Hemisphere, is linked to warming winter air and contributes to increased lake-effect snow, altered fish species competition, and risks to cultural heritage and safety. While natural patterns like El Niño cause year-to-year variability, long-term projections suggest further ice loss and surface water warming this century.

Since 1970, average summer nighttime temperatures have increased in 95% of 241 analyzed U.S. locations, warming by an average of 3°F. These 'sweltering nights' are warming faster than daytime highs and increase heat stress, particularly for vulnerable populations and low-income households lacking air conditioning. The document highlights that the western U.S. has experienced the greatest warming, with Reno, Nevada, seeing the highest increase at 17.4°F.

The document explains that fall foliage is driven by temperature, sun exposure, and rainfall, all of which are being altered by climate change. While warming temperatures generally delay leaf fall, drought and heat stress can cause earlier shedding or duller colors. These shifts have economic implications for tourism and ecological implications for forest carbon sequestration.

Analysis of 19 Winter Olympic host cities shows an average February warming of 4.8 °F since 1950, with some cities like Oslo warming by 9.8 °F. A University of Waterloo study indicates that under a high-emissions scenario, only one host city (Sapporo) would reliably provide safe and fair outdoor snow sports conditions by the 2080s. The Paralympic Games face higher risks due to their typical March scheduling, which coincides with warmer temperatures and a higher probability of rain.

The Arctic Resilience Interim Report 2013 examines the interdependence of human societies and ecosystems in the Arctic, arguing that a resilience framework is essential for managing rapid, interacting changes. It highlights that while climate change is a key driver, social, political, and economic factors also profoundly impact the region's adaptive capacity. The report warns that abrupt environmental changes risk crossing thresholds with global consequences, such as sea ice loss and permafrost thaw. It further notes that past policy decisions have often eroded traditional indigenous safeguards of resilience, necessitating flexible, participatory governance to manage future uncertainties and conflicting priorities.

Climate change is increasing the number of winter days with minimum temperatures above freezing across the Northern Hemisphere, leading to a reduction in snow cover and freshwater supplies. In the contiguous U.S., annual snowfall has decreased at 64% of 2,041 stations since 1970, and snow-derived freshwater in the western U.S. has fallen by 15-30% since 1955, with a further 25% decline projected by 2050.