Planetary Health is a multi- and transdisciplinary research paradigm, a new science for exceptional action, and a global movement. Planetary Health refers to "the health of human civilization and the state of the natural systems on which it depends". In 2015, the Rockefeller Foundation–Lancet Commission on Planetary Health launched the concept which is currently being developed towards a new health science with over 25 areas of expertise. There are a number of ideas, concepts that can be understood as precursors to the concept of Planetary Health. According to Susan Prescott, the term "planetary health" emerged from the environmental and holistic health movements of the 1970-80s. In 1980, Friends of the Earth expanded the World Health Organization's definition of health, stating, "health is a state of complete physical, mental, social and ecological well-being and not merely the absence of disease - personal health involves planetary health" James Lovelock created the term "Planetary Medicine" in 1986. In 1993 the Norwegian physician Per Fugelli wrote: "The patient Earth is sick. Global environmental disruptions can have serious consequences for human health. It's time for doctors to give a world diagnosis and advise on treatment." In the 1990s, a model curriculum Terra Medicine (Planetary Medicine) was developed at the Catholic University of Eichstätt-Ingolstadt as part of the Altmühltal Agenda 21 project. In 2000, James Lovelock published his book "Gaia: The practical science of planetary medicine". Milestones Fourteen years later, a commentary in the March 2014 issue of the medical journal The Lancet called to create a movement for planetary health to transform the field of public health, which has traditionally focused on the health of human populations without necessarily considering the surrounding natural ecosystems. The proposal recognized the emerging threats to natural and human-made systems that support humanity. In 2015, the Rockefeller Foundation and The Lancet launched the concept as the Rockefeller Foundation–Lancet Commission on Planetary Health.