The scarcity of resources has been the main problem that economists have been trying to deal with. This is the reason why the concept of sustainability was born. However, in the recent years this idea has become even more popular not just because of economic concerns but also because of ecological and social ones.
Nowadays, even water should no longer be taken for granted. Sahel is not the only region in the world where water is virtually priceless.
Nowadays, even water should no longer be taken for granted. Sahel is not the only region in the world where water is virtually priceless.
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