Carnegie Mellon University senior librarian, Mo Dawley, is a compendium of core readings on contemporary environmental art, ecological art and theory (20th century to the present) that includes, among other sub-categories, for example, deep ecology practices; ecofeminism; ecopsychology; land ethic and bioregionalism; sense of place; and systems thinking. Principles Artists considered to be working within this field subscribe to one or more of the following principles: Focus on the web of interrelationships in our environment—on the physical, biological, cultural, political, and historical aspects of ecological systems. Create works that employ natural materials or engage with environmental forces such as wind, water, or sunlight. Reclaim, restore, and remediate damaged environments. Inform the public about ecological dynamics and the environmental problems we face. Revise'' ecological relationships, creatively proposing new possibilities for coexistence, sustainability, and healing. Approaches Ecological art involves numerous diverse approaches, including: Representational artwork: reveals information and conditions through image-making and object-making with the intention of stimulating dialogue. Remediation projects: reclaim or restore polluted and disrupted environments – these artists often work with environmental scientists, landscape architects and urban planners. Activist and protest art: engage, inform, energize and activate change of behaviors and/or public policy. Social sculptures: are socially engaged, time-based artwork that involve communities in monitoring their landscapes, and take a participatory role in sustainable practices and lifestyles. Ecopoetic art: initiate a re-envisioning of the natural world, inspiring co-existence with other species. Direct encounter artworks: utilize natural phenomena such as water, weather, sunlight, plants, etc. Didactic or pedagogical works: share information about environmental injustice and ecological problems such as water and soil pollution and health hazards through education. Lived-and-relational aesthetics: involve sustainable, off-the-grid, permaculture existences. Orientations Contemporary ecological art has been articulated across interdisciplinary and scholarly groups in terms of life-centered issues, community participation, public dialogue, and ecological sustainability. In 1996, the educator and activist, Don Krug identified concepts frequently addressed by ecological artists that can be used by to interpret ecological perspectives and practices. The following four orientations were identified: Environmental Design, Ecological Design, Social Restoration, and Ecological Restoration. Environmental design/Sustainable design – Some artists work with nature as a resource for particular aesthetic endeavors. Artists with an orientation to environmental design are interested in achieving particular formal aesthetic effects. In the 1980s and 90s, artists, architects, designers, and civil engineers explored ways to link art, aesthetics, ecology, and culture. Ecological design – Artists who work in the area