On October 16, 2025, at 11:45 AM, a significant event unfolds: the inaugural Global Climate Action Summit takes place in a major city, bringing together world leaders, scientists, and activists to discuss urgent climate change initiatives. The summit aims to outline actionable steps for reducing carbon emissions, enhancing renewable energy usage, and fostering international cooperation on environmental issues. This gathering symbolizes a collective commitment to achieving sustainability goals and combating climate change in the face of growing environmental challenges. Looking back, one month prior to this event, on September 16, 2025, a new climate policy was announced by several countries, setting ambitious targets for carbon neutrality. One year before, on October 16, 2024, protests advocating for climate action took place in cities worldwide, highlighting the urgency of environmental issues and influencing government policies. Five years before, on October 16, 2020, a major report was released detailing the effects of climate change, urging immediate global response. Ten years ago, on October 16, 2015, the Paris Agreement was being ratified by numerous countries, marking a historic step towards global climate action. Fifty years ago, on October 16, 1975, groundbreaking research was published about the greenhouse effect, raising awareness about the impact of human activities on the planet's climate. One hundred years ago, on October 16, 1925, a significant debate occurred at an international conference regarding environmental conservation, laying the groundwork for future environmental movements. Throughout the last millennium, numerous events focused on resource management and sustainability took place, leading to the modern understanding of ecological balance and climate awareness that culminates in today's summit.