Environmental art is the range of contemporary practices that take the environment - land, water, weather, ecosystems and the human place within them - as material, site and subject. It grew out of the land art and ecological art of the late 1960s and 1970s, when artists such as Robert Smithson moved beyond the gallery to work at landscape scale, and it now spans earthworks, restoration ecology, public projects and climate-focused work. Some pieces simply place form in a landscape; others intervene in natural processes or set out to repair damaged sites. What unites them is that the setting is never background: the work addresses its site, its ecology and often the viewer's responsibility toward both.