Should humans transform the global desert or colonize Mars first?

There are always people on the Internet who are indignant when they see Musk advocating emigration to Mars and where he died. Why doesn't he try to make the desert of the earth a livable environment?

Others questioned his motives, saying that Musk was purely for making money.

Say what:? You may retire and live on Mars! You will probably retire and live in the desert! ?

The first sentence sounds full of dreams, and the last sentence sounds like a curse.

Is that so? Actually, obviously not.

It is extremely difficult to green the global desert, which is likely to bring ecological disaster.

Desert is a part of the global ecosystem, which is the result of the evolution of the earth for billions of years.

The earth ecosystem is an extremely delicate system. Every different environment has its own value. For example, dust contains a lot of iron and phosphorus, which can promote the activities of marine life and enhance the photosynthesis of algae. Without desert, algae plants may die, and those marine life that depend on algae plants will also die because of the rupture of the food chain.

One third of the earth's land is desert. ) is a large part of the whole earth environment.

The earth's ecosystem is related to the position of the moon and the earth in the solar system, the movement of the earth around the sun and the movement of the solar system around the Milky Way.

Livable zone of stars. )

To green the global desert, we must adjust the position of the earth and the moon, the position of the earth from the solar system, and the movement of the solar system around the Milky Way.

This is a task that is a hundred times more difficult than the earthization of Mars. All human beings live on the earth. One false move may lose the game.

A painting by Leng Jun)

The reason is very simple. A blank sheet of paper can draw the latest and most beautiful picture, but it is very difficult to add a stroke to the painted picture, which is likely to destroy it.

To sum up, greening the global desert is basically impossible, even extremely dangerous.

Immigrating to Mars and globalizing Mars is the best way for human beings to avoid putting eggs in one basket and escape the fate of ultimate extinction. After all, after 654.38 billion years, the earth will no longer be suitable for human habitation.

Relatively speaking, the transformation of Mars is not dangerous to the earth's ecosystem. If it is successful, it will bring great wealth and living space to mankind.

The successful transformation of Mars will make mankind own the whole solar system, the whole galaxy and even conquer the universe!

And if the desert is successfully transformed, mankind will only get a better earth.

There is only one answer without foresight: insufficient information or insufficient analytical ability.