There is not going to be a "hydrogen economy," and no combination of alternative energy systems or fuels will allow us to continue the suburban pattern. It's finished. We will, however, desperately need to grow more of our food closer to home, and so the preservation of agricultural hinterlands is of great importance. But don't expect the fiesta of suburban construction to continue more than a few more years.

I think we'll see a leveling off and then a contraction of population, not a continued upward trend.

I think water transport will see a revival. However, we're not going to replay the 20th century. The industrial city of that era will not be revived. Our cities are going to contract. Many of them will contract as a whole but densify at their core.

Government at all levels in the USA right now is engaged in a quixotic campaign to sustain the unsustainable. We're determined to run WalMart, Disney World, the Interstate Highways, suburbia, and an imperial military by other means than oil. We'll squander a lot of dwindling resources in the process.

We will have to make new arrangements, or revive bygone ones. We may, for another example, see the return of the boarding house.

The industrial age is over. What follows will be life lived on a much smaller and finer scale.

I believe we are deluded about alternative energy. The key is, whatever we do, we're going to have to do on a very modest scale. It's all about scale. We're not going to build giant wind farms with Godzilla-sized turbines all over the place. That's a fantasy.