I love science, and the idea that humanity may someday travel to other planets is fascinating to me. That said, I think the idea we are ready to colonize Mars and turn it into an hearth like planet seems like fake propaganda to me. If we could change the climate of a planet, drop its carbon dioxide and raise oxygen atmospheric percentage, create oceans and control their level, affect weather and temperature wouldn’t we do it on hearth? We have no idea how to do those things here, on a planet already full of life... how could we do it on Mars or anywhere else?