Scottie, 2 things:
1. It's an opinion piece, not a scientific paper.
2. It is basically lifted from NZ Geo magazine, so there may well be references in the mag that didn't get shown on the interweb thingy.
I think we will all have to confront many issues like this over the coming years. Hopefully we can do it with the same constructive attitude we, as Kiwis, are famous for. Rather than how yacht handicaps are discussed.