It is always possible to limit oneself to one unit and its multiples to quantify a physical quantity. For example, time is expressed in the second, the fundamental unit, or one of its multiples such as the hour, the day or the year. This quantification is understood and shared
All components of natural capital – biodiversity, air, water, soil, climate – are crumbling under human pressures. Under such extreme threats, many might give up. The sixty-four contributors to the book “Standing up for a Sustainable World. Voices of change” [1] have embraced the spirit of the Prins van Oranje,