Celebrate the National Parks Conservation Association’s history and unique features with real park rangers, family activities and outdoor fun. Park rangers from all 16 of Texas’ National Parks will be on hand to provide exciting demonstrations and answer questions about their parks. You can even earn a special Earth Day Jr. Ranger badge! National Parks Conservation Association will provide Young Explorer books to guide participants through the parks, collecting the parks stamps as they complete an activity – after completing at least five they can then be sworn in as Jr. Rangers and receive a Jr Ranger button.