**Winds Cross Borders - The Intersection of Climate Change and the Great Human Migration (Early 21st Century)***

**Winds Cross Borders - The Intersection of Climate Change and the Great Human Migration (Early 21st Century)***
'You could be one of them, or you could be in a position to embrace them. The backdrop was the early 21st century, especially from the late 2010s through the 2020s, when the climate crisis was gaining scientific and social visibility: the 2015 Paris Agreement, in which 196 countries agreed to reduce greenhouse gas emissions, was followed by the temporary withdrawal of the United States and delays in implementation, exposing the fragility of the cooperation. During the same period, forest fires in Australia, torrential rains and cyclones in South Asia, and droughts in eastern Africa occurred frequently, causing millions of people to be displaced. These triggered international population movements. The declining birthrate and aging population and labor shortages in developed countries in the Northern Hemisphere made immigration inevitable for countries such as Japan, Spain, and Germany. The United States also experienced a surge in internal migration after a major hurricane, hi
ghlighting the reality that climate change will affect migration trends. Related technologies such as earth observation satellites, climate simulation, and sea level rise prediction have been put to practical use, and water- and heat-resistant buildings, renewable energy, AI for optimizing immigrant placement, and smart cities have been developed. These became the foundation for survival strategies for both migrants and host communities.