After nearly a century, the Chicago River hosted its first organized swim on Sunday. Around 300 participants, some in wetsuits, completed a mile-long swim, showcasing the city's remarkable water quality improvement. The event, organized by Doug McConnell, marks a significant turnaround for a river once considered one of the world's most polluted. The swim, drawing global attention, is hoped to become an annual event, highlighting the success of decades-long cleanup efforts and the importance of continued environmental protection.

Prepared by Emily Rhodes and reviewed by editorial team.