without human or humanity, the earth still can functional and move on and maybe still beautiful as it was. besides humanity actually not destined to take care of this earth because since the beginning of human history we keep doing something which is destroying or changing the earth in the name of good development or progress. so my conclusion we are actually not originally from this earth, our ancestor came to this earth after their planet destroyed by their own hands or maybe we humanity is just a result from somebody's or any entity's experiments.. what do you think of that?? ^^
