so my dad &i believe that when that meteor hit the yucatan peninsula it brought with it all the elements needed to create the proper structure for humanity to exist. i mean, if they say that 2 billion years ago, although smaller in size, Mars was the identical twin to Earth -- it had the same exact environment -- does it not make sense we were hurdled from there, and our planet too will one day go through what Mars has? shadows and mountains left with traces of life: h2o. once humans leave, everything will succumb to nature again, the true mastermind of Life.