Scientists race to untangle complex links between exposure and mortality as fire weather grows more prevalent A thousand kilometres from the infernos gorging on northern Ontario’s boreal forests, Erin O’Connor watched the sky above Canada’s biggest city turn an “almost post-apocalyptic” orange as...
Source: [Guardian World](https://www.theguardian.com/news/ng-interactive/2026/aug/08/wildfire-smoke-unknown-health-impacts)