帮我看看有没有错误If people will living on mars,in the further .it is

帮我看看有没有错误
If people will living on mars,in the further .it is meaning half a people will go out of the earth .The earth will no crowded and polluted .the earth will be more beautiful .it is better thing.
however some people go to the mars .there will died becouse of cold .it is bad for people to live on the mars .the weather is too cold to live .just only it ,nobody want to live on the mars.