Climate Change in a few words , by Francisco Baeza Errazuriz

Climate change refers to long-term alterations in temperature, precipitation patterns, sea levels, and other aspects of the Earth's climate system. While climate naturally fluctuates over time, the current phase of climate change is primarily driven by human activities—especially the burning of fossil fuels like coal, oil, and gas. These activities release large quantities of greenhouse gases, such as carbon dioxide (CO₂) and methane (CH₄), into the atmosphere, trapping heat and causing the planet to warm at an accelerated rate.

The impacts of climate change are wide-ranging and global. They include more frequent and intense heatwaves, rising sea levels due to melting glaciers and polar ice, and stronger storms and hurricanes. Ecosystems are also being disrupted, with species migration, coral reef bleaching, and biodiversity loss becoming more common. For human societies, these changes threaten food and water security, increase the risk of natural disasters, and pose serious health risks, particularly for vulnerable populations.

Addressing climate change requires a combination of mitigation—reducing greenhouse gas emissions—and adaptation—preparing for and minimizing its impacts. This includes shifting to renewable energy sources, improving energy efficiency, protecting natural carbon sinks like forests, and redesigning infrastructure to cope with changing conditions. International cooperation, guided by agreements like the Paris Agreement, is crucial for limiting global warming and ensuring a livable future for coming generations. Francisco Baeza Errazuriz.