I understand perfectly.
The first thing I need to say is that, if you look at Canadian trends, they're not different from world trends, so obviously, life expectancy in Canada was something like 45 years of age in 1900, and today, as you know, we're pushing beyond 80. We have all the benefits that come from petroleum applied on a localized scale.
The one area where we perhaps differ a little bit is in the reforestation data. I was saying before that in all countries that are at the level of development of Chile and above, which rely abundantly on fossil fuel, the forest cover is either making a comeback, because people are leaving the farm because they're more productive.... This is true in Canada. The last time I checked the Quebec and Ontario data, something that people don't realize is that we're actually gaining forest in places like Ontario and Quebec, despite urban sprawl. That's because a lot of people are moving out of places like the Gaspé or south Georgian Bay. A lot of unproductive farmland is being abandoned and the kids don't want to take over. If your rural land is not very attractive for cottage types or people who want to vacation, or it's just too far from an urban centre, it tends to be reforested.
At a global level though, if you look at the FAO, the Food and Agricultural Organization of the United Nations, which looks at this data, they say that forest cover in Canada is not changing. That's because we have so much forest that even though we're gaining a little bit at the local level, it doesn't make a big difference overall.
As for Canada, I don't know the data about western Canada, but I can assure you that in Quebec and Ontario, we've actually regained forest land, or expanded our forest cover.