How to avoid many problems on the Earth

There are many ruin places on Earth. If we visit such places we feel too much attraction in such places, I have an in my mind that if we want to save our money , time and energy, we can re-build such places and we can covert them into beautifull palaces, pretty houses and beautifull parks. In this way we can save a huge space on earth, we can escape from polution and the load of over population. Its better rebuilding such ruined places instead of building new places new houses or news buildings. This earth main issue is over population and due to over population building of new buildings that is being cause of over loading on this earth.

The 3 dilapidated buildings given in this post indicate that the land that surrounds these buildings is being wasted. Those who do not have a house and they want to buy a new land nearby and build a house or those who do not have so many resources or those who are poor do not have a house to live in and they live on the sidewalk have been. If the whole world becomes accustomed to this thing, it is possible to get rid of population, pollution, and many other problems and diseases in this world at a
glance.