very interesting, but the part about singles being less concerned with the future is more than slightly ridiculous. IMHE, parenthood brings on a set of priorities that override longer term, less tangible issues in favour of supporting children.
The singles not caring about the future is one perfect example. If it were true, and it were only the regions with high concentrations of parents caring about the future, then you would see much stronger support for actions to prevent climate change in areas where there are higher birth rates. The thing is, you don't - it's the cities - the places that the author is bemoaning for the lack of kids (he even calls cities "pleasure centers") that are at the forefront of trying to fix the big problems. The areas with the high birth rates are the ones that seemingly don't care about the future.
So yeah, take every last bit of his analysis with a grain of salt. He strikes me as a "America has been going backwards since the 1950s" type and he's trying to back the data in to fit his preconceived notions of how the world should work.