Environmental education teaches children and adults how to learn about and investigate their environment and to make intelligent, informed decisions about how they can take care of it. It is taught in traditional classrooms, in communities, and in settings like nature centers, museums, parks, and zoos. Learning about the environment involves many subjects because understanding how the environment works, and keeping it healthy, involves knowledge and skills from many disciplines. Whether learning about the world just outside the window, or about landscapes and cultures on the other side of the world, the environment provides a real-world context for learning. There is a rich array of programs and resources available for both formal and nonformal educators who wish to teach geography content and skills using the environment as a context for learning. The North American Association of Environmental Education's (NAAEE) publication Excellence in Environmental Education: Guidelines for Learning (K-12) provides a framework for appropriate environmental content and skills for students at three progressive grade levels-fourth, eighth, and twelfth. For each strand and set of indicators, the guidelines include a cross-reference to other national disciplinary standards, including national geography standards. A review of the guidelines makes clear the profound overlap between environmental and geography education. NAAEE's newly launched website includes a professional learning platform where educators can create a free account to access a wide range of environmental education resources and tools, including curriculum materials, webinars, discussion boards, and research: www.naaee.org/ eepro. In 2016, the centennial celebration of the National Park Service provides an opportunity to engage thousands of people of all ages in geography and environmental education. In partnership with the National Geographic Society, the National Park Service will host BioBlitz events in parks across the country. A BioBlitz brings communities together over a short period of time to collect, identify, and document as many species of plants, animals, and other organisms as possible in a specific geographic area. While the National Park Service and National Geographic Society are holding signature events in May 2016, the National Geographic Society is encouraging groups to host neighborhood and schoolyard events as well and offers many resources online for anyone who wants to learn more.