Julia Butterfly Hill is an American environmental activist and author best known for living in a 180-foot-tall California redwood tree named Luna for 738 days from 1997 to 1999. Her tree-sit protest successfully prevented the ancient tree's logging and brought international attention to forest preservation. Hill chronicled her extraordinary experience in her book "The Legacy of Luna: The Story of a Tree, a Woman, and the Struggle to Save the Redwoods." Since descending from Luna, she continues to advocate for environmental sustainability and social justice through speaking engagements, activism, and her organization Circle of Life Foundation, inspiring others to take meaningful action.