给出一个主题或话题，并提供一篇关于该主题的短文摘要。
主题：环保
在全球范围内，人们越来越意识到环保的重要性，环保已成为社会热点话题。近年来，各国政府已经采取了多种措施以保护环境，例如减少污染物排放、增加可再生能源投资和升级废物处理系统等。
Topic: Environmental Protection
Summary: Environmental protection has become a hot topic worldwide as people increasingly recognize its importance. In recent years, governments around the world have taken various measures to protect the environment, such as reducing pollutant emissions, increasing investment in renewable energy, and upgrading waste management systems.