Deep ecology is a recent branch of ecological philosophy (ecosophy) that consiers humankind an integral part of its environment. Deep ecology places greater value on non-human species, ecosystems and processes in nature than established environmental and green movements. Deep ecology has led to a new system of environmental ethics. The core principle of deep ecology as originally developed is Arne Næss's doctrine of biospheric egalitarianism — the claim that, like humanity, the living environment as a whole has the same right to live and flourish. Deep ecology describes itself as "deep" because it persists in asking deeper questions concerning "why" and "how" and thus is concerned with the fundamental philosophical questions about the impacts of human life as one part of the ecosphere, rather than with a narrow view of ecology as a branch of biological science, and aims to avoid merely utilitarian environmentalism, which it argues is concerned with resource management of the environment for human purposes.