What the Wildfire Smoke in Your Sky Has to Do With the Ocean
Release Date: 07/20/2026
How To Protect The Ocean
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info_outlineFor a week straight, Andrew watched his own sky turn orange outside Toronto as smoke from nearly 900 wildfires burning across Canada, most of them following the boreal forest from the east coast to Northwestern Ontario, drifted south into the US and back again. He walks through what actually happened on the ground: which towns and First Nations were evacuated, how bad the air quality got (Toronto briefly had the worst AQI in the world), and why northwestern Ontario, not a hugely populated area but home to vulnerable First Nations communities, bore the brunt of it.
Then he digs into why this keeps happening. Most of Ontario's fires this season were sparked by lightning, not arson, despite conspiracy theories claiming otherwise (arson accounts for well under a quarter of cases). An active El Nino is drying things out further, and climate change is intensifying the underlying heat and dryness that let these fires spread. Andrew also connects the dots to the ocean directly: the boreal forest is one of the planet's biggest carbon sinks, and when it burns that stored carbon heads into the atmosphere, where roughly a quarter of it eventually gets absorbed by the ocean, driving further acidification.
The back half of the episode gets political. Ontario slashed its emergency firefighting budget from $271 million spent in 2025-26 down to $150 million budgeted for 2026-27, even as Premier Doug Ford defends the province's readiness. Meanwhile, US President Trump and several senators have floated tariffs and sanctions against Canada over the smoke, a move Andrew calls scientifically and diplomatically backwards given how often Canada and the US send firefighters and equipment across the border to help each other. He closes with concrete steps listeners can take, from checking air quality indexes to contacting elected officials about wildfire funding.
Takeaways From the Episode
- Nearly 900 wildfires were burning across Canada as of July 16, most following the boreal forest belt into Northwestern Ontario.
- Vulnerable First Nations communities and small towns bore the brunt of evacuations, some residents had to self-evacuate by boat or air with little warning.
- Most fires were lightning-caused, not arson, arson accounts for well under a quarter of cases despite online conspiracy theories.
- Burning boreal forest releases stored carbon into the atmosphere, and roughly a quarter of human-caused CO2 emissions get absorbed by the ocean, tying wildfires directly to ocean acidification.
- Ontario cut its baseline emergency firefighting budget from $271 million spent to $150 million budgeted for the coming year, a proactive-versus-reactive funding problem.
- US tariffs and sanctions threats against Canada over the smoke ignore how often the two countries help each other fight fires, including the loss of a Canadian firefighter in Colorado this year.
- Individual actions still matter: check air quality indexes before extended time outdoors, follow evacuation orders immediately if you're in a fire zone, keep a 72-hour go bag ready, and contact your elected officials if wildfire underfunding frustrates you.
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