Productive land, clean and abundant fresh water, healthy oceans and a stable climate are arguably the foundation of all the other socio-economic goals. The rationale is simple: we are not going to build a just and prosperous future for all of us, on a degraded planet with an impoverished nature. The most common threat to declining populations is loss and/or degradation of natural habitat, but unsustainable exploitation, invasive species and pollution are also major threats.