National parks contain many of our nation's most treasured landscapes, from the majestic mountain ranges of Alaska to the vast prairies of the Everglades. Learn about the natural resources in parks, from the rocks under our feet to the sky overhead and everything in between. Discover the issues that affect our parks and how we join with neighbors and partners to address them. Meet the people who protect our parks and learn how you can help preserve these treasures for generations to come.