根据提供的主题和字词，为一篇新文章写一个引言段。


主题：环境问题
字词：气候变化、污染、可持续发展
In recent years, the world has become increasingly aware of the urgent need to address environmental issues. With the devastating effects of climate change, widespread pollution, and the growing demand for sustainable development, the importance of protecting our planet has never been more pressing. As we continue to grapple with these challenges, it is crucial that we come together as a global community to take action and preserve the health and well-being of our planet for generations to come.