The impact of 7 billion people living on planet Earth is having a profound effect on its environment and climate. The Climate Justice movement indicates that 20% of the Earth's surface is now degraded, with serious consequences for the world’s poorest in trying to sustain a living. Such a huge and increasing global population, with its need for economic activity, sustenance and quality of life, is making unsustainable demands on the Earth’s natural resources. Reserves of timber, fish, oil, and clean water are being depleted.