I was surprised at your blog. I didn't know how the world's population is increasing. Yeah, it is a big problem. In Japan, although the land is very small, more than 0.1 billion people live in. Many high buildings are built, and more and more buildings are being founded. At the same time, air pollution is getting worse and worse. We must improve this situation.
Moreover, I want to say about food. Countries like a developed country have enough food, but other countries like a developing country don't have food for living. So many people die of poverty. This is also big problem. Not only the luck of food but also the rate of food which developed countries have must be reconsidered, I think.
