If everyone in the world lived as the average UK resident does, the consequent rate of consumption means we would require three planets' worth of natural resources to sustain us.
Something which is not always realised is that the Zero Waste movement is about much more than recycling. Recycling is actually near the bottom of the hierarchy.
What is not being communicated enough is the fact the call for action on climate change is no longer about saving polar bears (not that it ever specifically was). It is about saving the human race.