- Climate change is the greatest environmental threat of our time, endangering our health, communities, economy, and national security. The Clean Power Plan represents the most important step the United States can take right now to combat climate change and help spur climate action around the globe. Read more »
Global Warming Explained
Climate change is the single biggest environmental and humanitarian crisis of our time. The Earth's atmosphere is overloaded with heat-trapping carbon dioxide, which threatens large-scale disruptions in climate with disastrous consequences. We must act now to spur the adoption of cleaner energy sources at home and abroad.