We don’t grow our crops in a desert. They grow in very specific regions of the world, often in areas that are suitable due to natural formations and easily obtainable water. Most of Canada is forested land that is uninhabited with no infrastructure such as roads, running water, or electricity - not to mention there has never been a large agricultural presence in those areas, so it would have to be started from scratch, if it is possible at all.

When you say we’ll huddle around the proverbial fires, it might be a very small human population. Our civilization (likely including both of us) probably won’t be around at that point.

Plants don’t grow without light. Plants can’t survive extreme heat and drought.

Once it gets too hot or too dry to grow crops, it won’t matter anymore. Call me a doomer, but we aren’t doing enough to stop that future from happening.

Finally