Pollution encompasses the introduction of harmful contaminants into the natural environment, causing adverse changes that threaten ecosystems, public health, and global climate stability. From the long-term industrial legacy of chemical disasters like the Bhopal gas tragedy to modern urban initiatives aimed at improving air quality through smoking bans and emission controls, this tag tracks the ongoing efforts of international news outlets—including the BBC, DW, and Bloomberg—to report on environmental degradation and the regulatory measures designed to mitigate its impact on communities worldwide.