Environmental protection aims to protect the natural environment for both environmental and human benefit. Environmental issues refer to harmful human impacts on the environment. Key issues include climate change caused by greenhouse gas levels exceeding 400 ppm, as well as rising temperatures, extreme weather, and their effects such as increasing humanitarian needs. By 2050, the growing human population of 9.6 billion will further stress the environment through impacts like higher temperatures driven primarily by human activities over the past 50 years. Addressing environmental degradation requires advocacy, education, and activism on individual, organizational and governmental levels.