How to write a science fiction composition about saving resources

It can be written as follows: One day in the 25th century, scientists made an important announcement to the world that a second Earth had been discovered in the Milky Way, and the living environment there was the same as that of the Earth hundreds of millions of years ago, and there were many precious wild animals and plants. Scientists are going to let all the people of the earth emigrate, because the earth is too dirty to stay. Scientists started the space shuttles and spaceships of various countries, carrying more than 8 billion people, and sailed to the new earth at the fastest speed.

at the destination, the new earth is exactly the same as the original clean and beautiful earth. In order to distinguish, humans named this new planet the celestial sphere, and they began to live and reproduce happily. However, less than a hundred years later, human beings treated the celestial sphere like the earth: killing precious protected animals and deforestation; Countless pesticide plant, power plants and cement factories have been built ... These factories have discharged a large amount of sewage and waste gas, and the ozone layer on the celestial sphere has become thinner and thinner. In addition, the frequent activities of sunspots have caused large-scale destruction of the ozone layer. Clear rivers become turbid, green forests become vast deserts, glaciers in the Arctic melt faster, and at least one low-lying country is submerged by seawater every year ...

At this time, human beings wake up, but it's too late, and scientists use whatever means to no avail. It seems that the situation has reached the point of irretrievability. Some guys don't care, they think the celestial sphere is dirty, and it's a big deal to live on another planet. However, sadly, there are only two earths in the whole universe, and not all planets are suitable homes for human survival.

fifty years later, the celestial sphere, which was ruined by human beings, suddenly exploded, and human beings perished from then on.