Human existence is in good condition, if all enjoy good food, air, water, health and environment;
If human existence is in best status, life on the Earth is paradise to live long in joy and peace;
All these things happen if all live in harmony with Nature sans disturbing ecological condition;
World is a great paradise in the Universe as such a planet is not seen anywhere so far sure!
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To save Earth, all should not forget world history and literature while blindly indulging in material progress alone; Our downfall is worsening bitterly due to lopsided economic and technological development due to materialism only!