Why did Hawking say that after 50 years, humans will move to Mars, and Mars can't survive?

First of all, Hawking said that human beings will immigrate to Mars or other planets within 200 years, not 50 years later.

He said this because he saw the problem of the current human development model. Hawking said: "mankind has entered an increasingly dangerous period, and we have experienced many life-and-death events." Due to the genetic code of' selfishness and greed' carried in human genes, human beings are plundering the earth day by day, and resources are being exhausted little by little. Humans can't put all their eggs in one basket, so they can't bet on one planet. "

In fact, it is hoped that human beings will protect the natural ecology of the earth while developing, and not destroy themselves through destructive development.

As for whether Mars can survive, it is still possible, but it will cost a lot, but it still needs to be done in the face of human extinction.

First, building a space warehouse on Mars is to isolate people from the natural environment of Mars and rely on indoor plants and other artifacts to live inside.

Second, directly transform the natural environment of Mars, such as slowly transforming the desert on the earth into an oasis. But it will take a long time.

Colonial order: microorganism-plant-animal-human.