That's a good point Baluqtaq. Overpopulation is THE driver behind environmental degradation. Every person puts a little more pressure on the world's resources. Some more than others, yes, but pressure nonetheless. It's a subject that is rarely discussed because it is "uncomfortable" since it cuts right into the premise that it is a basic human right to pump out as many children as desired. Its fine to have one or two kids, to replace your own number. Even three is a defendable number (giving  a "spare", so to speak). But a couple generating four (or more) children is indefensible, other than to say "it's their right". I have tremendous respect for the family in the article, simply amazing and obviously wonderful people. But if every couple had as many children as they, then the environment would be in even more trouble than it already is. Luckily for their home nation as well as many other developed nations, many couples make the responsible choice of having just one (or none at all).