The Nature Conservancy is working from global to local levels to tackle one of the biggest challenges of our timeclimate change. The Paris Agreement is a legally binding international treaty on climate change.Creates the Concrete Carbon Utilization, Reduction, and Removal Breakthrough Act. While climate change is a worldwide issue,. 75 percent of all greenhouse gas emissions are generated in the world's urban areas. Illinois played a pivotal role in the creation of The Climate Registry, a collaboration among. 11, reaching an agreement on climate change mitigation efforts at the end of the conference. Yet, they are one of our most fragile environments in the face of climate change. Today, renewable sources make up only 10.5 percent of power.