Terraformation

Have you ever thought, of a second Earth?

I have.

And, it's not that far from reality to be honest. The name of the planet who is speculated about for Terraformation is Mars... One may say it would be to distant in the future for us to be interesting, however, it's not. We have the technology needed, but we don't have the economy. We are talking about transforming a planet to fit human life. It will take decades for the process to be fullfilled, but, once there the future humans will be grateful to us. Also, think about it: Our planet gets hit by an Asteroid. I can describe what happens in two words: Goodbye humans. Splitting ourselves up onto different planets enlarges the possibility of the human race surviving until the collapse of the universe.
Let me take you through the steps needed.

1) Colonization
This is probably the most important one. And the most difficult. ESA claims they will have traveled to Mars by 2040, being five years earlier as the NASA. But, that is not colonizing. It's far from. We have not even colonized the moon yet, 50 years after our first step on the moon. However, once settled we may consider the following steps.

2) Heating up & the replacement of CO² by O²
Once settled, humans could begin small factories on Mars. It's the same thing happening on Earth, where we should NOT do it. It's a process that will take years depending on the amount of factories on Mars. Once heated the polar ice will melt hopefully and water will once again flood on the Martian surface.
Then, we should focus on the lack of Oxygen.
The idea is simple. Vegetation. However, Mars does not have any nutrients in it's surface, so it would be difficult for plants to survive. I have a solution, however. Grow moss. It literally grows anywhere no matter the amount of nutrients in the soil. Once they die, new nutrients become available and bigger plants will be able to grow. Within 50 years the planet will look like Earth again.

As for it's smaller gravity, the only effect it will have on us will be the possibility of Martian children being larger. It'll be a common thing to have relatives on Mars, also.
I just hope this dream of mine will be reality in the near future. I hope the project starts within my lifetime.

BTW, I have the strong feeling I forgot something. Does anyone know what?

Wouldnt we need an atmosphere to survive on Mars like on Earth? This sounds like a seriously complicated thing to make happen that would take hundreds of years. Im pretty sure its not simply going to be just like Earth life. Plus wouldnt the time be different because of Mars's Orbit?

I believe Mars already has an atmoshpere, though it isn't as dense as Earth's I believe. But, radiation indeed is a problem but it'll search it up later, on my phone right now. Mars does have seasons and it's years is almost as long as Earth's. And the time in Europe is different than that in the USA.

Imagine if after billions of years, the bacteria stemmed from mars' moss growth evolves into some sort of heat resistant underground-dwelling sub species that begins to rival the human race and it becomes an all out battle of the planets: Mars vs Earth?

I wonder how long the sun will last till that happens..

Mars doesn't have a magnetic field like Earth. It's what keeps out ozone from being destroyed by cosmic rays, and it's the ozone which helps make life here safe for us.

If we lived on Mars we'd probably have to live underground.