Undoubtedly, this will come at a significant cost, but economic growth will not be limited by the scarcity of natural resources with commercial value. However, it is limited to natural resources without commercial value. Consistent with what has been said in Chapter 1, to the extent that impacts are external, i.e. not taken into account by market participants, natural resources can be quickly depleted with great losses to societies and individuals. Examples are tropical rain forests and local ecosystems the world over. This comes back to the issue of land-use and the ecosystem services that land provides. Climate change can also be analysed from this perspective, which would require a consideration of the absorptive capacity of the earth’s atmosphere as a finite natural resource being depleted by the incessant emission of large amounts of greenhouse gases (GHGs).