S.W. Hawkings just said that this century is the last one and we should search for any other planet for our shelter. we say that we are the only conscious among all the living beings on this earth but is it so,,,, see what we have done to the earth, yes, our earth....
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Thank you for answering this question, but the genuine question is beyond the lines. It is_ We have destroyed our planet and are searching for other nests which we can foul... We have developed a pity habit of fouling our own nest.