Ninety-seven percent of climate scientists agree: Man-made climate change is a reality. In early 2014, two landmark reports spelled out the reality of the challenge we face. The Intergovernmental Panel on Climate Change and the National Climate Assessment both showed that, left unchecked, climate change has the potential to affect Americans everywhere—no matter where they live.
- Every region of the United States is already experiencing the effects of climate change.
- If we don't act to curb current global emissions, they could lead to a global temperature increase of over 4 degrees Celsius (7.2 degrees Fahrenheit) by 2100—a scenario widely considered a global catastrophe, contributing to extreme weather, food and water shortage, and global instability.
- Carbon pollution causing climate change is responsible for air that can be unhealthy to breathe, contributing to health risks for many children. Over the past three decades, the percentage of Americans with asthma has more than doubled and climate change is putting those Americans at greater risk of landing in the hospital.