Free-choice learning and, derivatively, free-choice environmental learning emerges as a powerful vehicle for supporting diversity in learning styles (Falk & Dierking, 2002). In this article, I argue that free-choice environmental learning holds great potential for enabling us to understand what is at stake in environmental learning and thus help us build a sustainable future. I examine the different informal learning contexts for children, home (family and play), museums, zoos, nature parks and wilderness, among many others, and offer an explanation for how learning occurs in these settings