[Bumblebeebob]

Welcome Chenyu,

It is very sad that developing countries haven't learnt lessons from the West's own environmental problems & mistakes since the industrial revolution & seem destined to make the same mistakes which we are only now getting to grips with (though we still have a very long way to go IMO). The West has the technology & wealth to prevent this happening again but, as we all know, the rich just get richer & the poor just suffer. Unfortunately it's economics which drive things along, humans in general don't seem able or are unwilling to take a long term view. I don't think it will be long before we will reach the point where the planet will no longer be able to support large populations. In time it will level off but not before much conflict & suffering has occured.