Canada is on fire again — and the smoke is already crossing into US cities

A bad year, or a running machine

A freight train crew calls for rescue, “encased” in flames near a remote Ontario town. Six hundred miles away, Toronto wakes to skies the colour of dishwater and air among the worst on the planet. The easy way to file this is: a bad fire year. Rotten luck, a dry spell, too many sparks.

But look at the shape of it instead of the size. A wildfire is usually described as a symptom — proof the climate is warming. It is that. It is also a cause. Forests are vast stores of carbon. When they burn, that carbon pours into the air, and the warmer, drier air that results makes the next forest catch faster and burn harder. The fire is both the effect and the engine.

That turns “a bad year” into something else: not a run of separate accidents, but one process quietly feeding itself.

When the output becomes the input

There’s a name for this shape. It’s a reinforcing feedback loop — a circle where what comes out the far end gets fed back into the near end and makes it bigger. Fire releases carbon. Carbon adds warming. Warming dries forests. Dry forests feed fire. Round it goes, and each turn hands the next turn more fuel.

Most of the systems we trust are the opposite kind. A thermostat is a balancing loop: when the room gets too hot, it pushes back toward a set point. That’s a circle that steadies things. A reinforcing loop does the reverse — it pushes away from where you were, and it speeds up as it goes. The first kind holds a system in place. The second kind runs away.

The important thing about a runaway loop is what it does to the question “what caused this?” In a one-off event, the cause is the answer. In a loop, the original spark is almost beside the point. Once the circle is closed, it supplies its own reasons to keep going.

The same circle, in places with no forest

Once you have the shape, you start seeing it everywhere, and not only in nature.

A bank run is a reinforcing loop made of fear: each person who pulls their money out makes the bank look shakier, which frightens the next person into pulling theirs. Compound debt is one made of arithmetic: interest piles onto interest, so the amount you owe generates more of the thing that makes it grow. An eroding riverbank is one made of dirt: every collapse exposes fresh soil for the water to carry off.

The signature is always the same. The thing that just happened makes the next happening more likely. Notice what that does to your attention. You stop asking “what lit this?” and start asking “what’s keeping it lit?” — because in a loop, those are two completely different questions, and only the second one can actually be answered.

You are breathing the loop

It would be comfortable to watch Canada burn from a safe distance. The loop doesn’t allow it.

Smoke has no respect for the edge of a fire. It rolls hundreds of miles into cities that never saw a flame, into the lungs of people who will never meet a firefighter. And the carbon lifting off those forests doesn’t warm Ontario alone; there is one atmosphere, and everyone shares it. A fire in a place you can’t find on a map is stirring the same warming that lengthens your own summer. You are not above this looking down. You are a node inside it, breathing.

So are the people fighting it. The crew on that train, the pilots dropping water, the agencies counting acres — none of them stand outside the circle. They work inside a loop that their own warming world keeps feeding. That isn’t blame. It’s just the geometry of the thing: in a loop, there are no spectators.

The comfort of calling it a bad year

Here’s the part that’s easy to miss because it looks like plain common sense. We are set up to treat each fire season as its own event. Put it out. Tally the acres. Mourn what’s lost. Reset the counter and hope next year is kinder.

That framing feels natural — and it quietly does something. If every year is a fresh accident, nobody has to add them up. The loop disappears into a string of unlucky summers, and the harder accounting — that the summers are feeding each other — never has to be done. A way of seeing that treats a circle as a list of separate events keeps the bill small and the story simple. That can be an honest habit of mind. It can also be very convenient for anyone who would rather not carry the full sum. Both can be true at once.

Naming the loop is the harder, truer accounting. It doesn’t tell you what to feel about it. It just refuses to let the years stay separate.

What no single seat can see

The trouble with a loop is that no one place inside it can see the whole circle. The firefighter sees the flame. The regulator sees the acres. You see the haze over the skyline. Each is a real slice; none is the circle. And a circle can’t be cut at one point by one hand — the spark is easy to name and impossible to un-light, and the loop it started long ago stopped depending on it.

So the honest thing to take from a burning forest isn’t a lever. It’s a smaller certainty. When the next disaster arrives labelled “a bad year,” you’ll know to ask whether it’s an event or an engine — and to hold the answer a little more loosely, because from where you stand, breathing the smoke, you can only see your slice of the turn.