Most of the national and international governmental bodies use the FAO definition in relation to forests which defines forests as “land with tree crown cover (or equivalent stocking level) of more than 10 percent and area of more than 0.5 hectares (ha). The trees should be able to reach a minimum height of 5 meters (m) at maturity in situ”. According to this definition, forests are nothing more than an abstract collection of trees with certain physical characteristics. Obviously, trees are indeed crucial elements of a forest, but what this FAO definition leaves out is that a collection of trees alone does not make a forest. Forests are defined by a complex web of interaction between a large variety of plants and animals as well as forest and forest-dependent peoples. Some parts, including insects, birds, large animals and trees are maybe more visible but it is the less visible plants and animals, the invisible web of life in forest soils that sustains a forest and provides the many uses for forest dependent peoples and guarantees essential functions for humanity and the planet in general. For more than 10 years, many organizations have been campaigning for FAO to change its ‘forest’ definition.