High proportion of Canadian wildfire smoke originates below ground, scientists report
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Article Excerpt
High proportion of Canadian wildfire smoke originates below ground, scientists report
IVAN SEMENIUK
SCIENCE REPORTER
PUBLISHED 1 HOUR AGO
Open this photo in gallery:
Smoke from forest fires in Northwestern Ontario blankets the city of Toronto, on July 16.
COLE BURSTON/THE CANADIAN PRESS
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As a brown pall of smoke from Ontario forest fires descended on the northeastern United States earlier this month, President Donald Trump seized the opportunity to blame C…
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Jul 27, 2026