[Haunted City] Problem Area Selection: Environmental Sustainability Team: Taein Um, Juyoung Yun, Joseph Seo, Yongjung Shin Link: https://docs.google.com/document/d/1chPjjE7-x587TJ-AjLI1uSKORuFJVG94YfGSfQo3vUU/edit?usp=sharing #hackoween, #hack