<p>Natural resources encompass a wide range of physical and biological materials, entities and systems, from coal or iron ore, to a freshwater lake, North&nbsp; Atlantic cod, the Amazon rainforest, sunlight or the atmosphere. Some of these are exhaustible, some regenerate but can be damaged or depleted, and some are renewable and non-depletable. During the industrial era, and even more so in the era of human-made climate change, attention has been drawn to the multiple threats of unsustainable resource use.</p>

<p>What are the key natural resources in danger of overconsumption or depletion? What are the potential consequences of a diminishing state of the world natural resources? What is being done and can be done to reduce, reuse, recycle and replenish natural resources?</p>
