The gradual, accelerated warming of our planet will have disastrous consequences for America's national parks. Glaciers in the national parks of Alaska as well as North Cascades and Mount Rainier National Parks will continue to disappear; Joshua trees will no longer exist at Joshua Tree National Park; and a rising sea will drown Everglades National Park and portions of historic sites such as Colonial National Historical Park, site of the first permanent English settlement at Jamestown.
As chronicled in this report, national parks already are helping us to understand how global warming affects our natural world. Within them, we see the warning signs of major changes ahead. We must learn how to manage parks to maintain healthy ecosystems in the face of climate change, and we must build public support for doing so.