Grand Canyon National Park invites the public to celebrate Earth Day with no entry fee! This year’s celebration will feature informational displays about current park conservation efforts and initiatives, including water conservation, waste, recycling, composting, dark skies, smart transportation, and biofuels. Visitors can also participate in various litter clean-ups throughout the park. Earth Day events take place from10 am to 2 pm at Grand Canyon Visitor Center Plaza near Mather Point. Park admission and Earth Day celebration events are free.