Natural resources have always been precious to mankind. Today, they are more in demand than ever. Population growth, climate change and the rising affluence of developing nations are putting a strain on the planet’s limited resources. Water, arable land, food, fuel and raw materials are seeing a period of unprecedented demand and there is worldwide concern about future shortages and the destruction of ecosystem services, such as photosynthesis, pollination, flood prevention and climate stabilization, that results from over-exploitation.

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