The Earth's climate is rapidly changing. In the United States and other nations, people are seeing how the impacts of rising global temperatures affect their communities, their livelihoods, and the natural environment.
Substantially reducing greenhouse gas emissions is essential to avoiding the worst impacts of climate change. But mitigation alone is not enough. Even with emission reductions, some warming will still occur.
Adaptation planning at the local, state, and national levels can limit the damage caused by climate change, as well as the long-term costs of responding to climate-related impacts that are expected to grow in number and intensity in the decades to come.