Ecology
Ecology (from Greek: οἶκος, "house", or "environment"; -λογία, "study of") is the branch of biology which studies the interactions among organisms and their environment. Objects of study include interactions of organisms with each other and with abiotic components of their environment. Topics of interest include the biodiversity, distribution, biomass, and populations of organisms, as well as cooperation and competition within and between species. Ecosystems are dynamically interacting systems of organisms, the communities they make up, and the non-living components of their environment. Ecosystem processes, such as primary production, pedogenesis, nutrient cycling, and niche construction, regulate the flux of energy and matter through an environment. These processes are sustained by organisms with specific life history traits. Biodiversity means the varieties of species, genes, and ecosystems, enhances certain ecosystem services.
Justice
Justice is the legal or philosophical theory by which fairness is administered. The concept of justice differs in every culture. An early theory of justice was set out by the Ancient Greek philosopher Plato in his work The Republic. Advocates of divine command theory say that justice issues from God. In the 17th century, theorists like John Locke advocated natural rights as a derivative of justice. Thinkers in the social contract tradition state that justice is derived from the mutual agreement of everyone concerned. In the 19th century, utilitarian thinkers including John Stuart Mill said that justice is what has the best consequences. Theories of distributive justice concern what is distributed, between whom they are to be distributed, and what is the proper distribution. Egalitarians state that justice can only exist within the coordinates of equality. John Rawls used a theory of social contract to show that justice, and especially distributive justice, is a form of fairness. Property rights theorists (like Robert Nozick) take a deontological view of distributive justice and state that property rights-based justice maximizes the overall wealth of an economic system. Theories of retributive justice are concerned with punishment for wrongdoing. Restorative justice (also sometimes called "reparative justice") is an approach to justice that focuses on restoring what is good, and necessarily focuses on the needs of victims and offenders.
Anthropology
Every culture faces the same fundamental challenges. Men and women come together, children are brought into the world, nurtured and sheltered; elders are led into the realm of death as fearlessly as the imagination allows. To be human is to know the terror and splendour of a night sky, the crush of storms, the blood cries of enemies sweeping in with the dawn. Such is our common experience. To bring order to chaos, sense to sensation, we have created rules, which cross-culturally are remarkable in their consistency. ... Yet within this common fabric, this cloak of humanity, lie the individual threads of specific and highly specialized ways of life, distinct cultures, each with its unique and wondrous dream of the Earth. Unravelling the cloth and holding the strands to the light is the practice and contribution of ethnography.
Wade Davis, Light at the Edge of the World (2007)