The term Green left is used primarily to refer to a combination of environmentalism, feminism, socialism, and pacifism in countries where the term is used. It is primarily a social justice- and human rights-oriented ideology, with an expansion in focus to the rights of other species.

The name Green Left is also used by a variety of organizations which espouse socialist or Marxist principles but with a greater emphasis upon environmental preservation than previous iterations of socialism and communism.

In Europe, the green left arose partly out of the declining Eurocommunist tendency that has been mostly associated with various Communist parties in the continent; as a result, many former Communist parties and remnants of Communist parties were either reestablished or fused into existing green parties.

Far-left political parties or joint electoral lists have been formed over the years, most often between Marxists and radical greens. In the Netherlands, the GreenLeft party was formed in 1989 by a merger of a communist, pacifist, leftwing Christian and green parties. In December 2007, an Italian electoral coalition of the radical left was formed known as The Left – The Rainbow, comprising Federation of the Greens, two communist parties and a small democratic socialist party.

Susan Price, born 1955 in Dudley in the West Midlands, is an award-winning English writer of novels for young adults. She also writes for younger children. She still lives in the Black Country.

Many of Susan Price's works are fantasy, from science-fiction to ghost stories; some are historical novels; others are about animals or everyday life. Many of her short stories are re-tellings of tales from folklore. An original novel based on folklore, The Ghost Drum, won the Carnegie Medal for 1987.

In her award-winning novel The Sterkarm Handshake and its sequel A Sterkarm Kiss, time travel brings together a young woman from 21st century Britain and a young warrior from 16th century Scotland. She takes his side in a conflict between a 21st century corporation and his border clan, and they develop a relationship.

The Pagan Mars Trilogy is set in a scientifically advanced alternative world where the pagan gods are still worshipped and slavery - called bondery - is commonplace.