Every day, 300 trucks bring garbage to the city’s power plant, turning garbage into something useful: heat for the city’s long, cold winters. Copenhagen prides itself as being a model city for sustainable and healthy solutions. They have made the goal to become carbon neutral by 2025 and have reduced their emissions by 42% from 2005. Others are learning from Copenhagen’s initiatives as they hosted the 2019 C40 World Mayors Summit where city mayors, city delegates, climate experts, influencers, and business leaders met to discuss innovative, influential, and solution inspire solutions to combat climate change. There are over 90 cities in the C40 group, including 12 cities in the United States.