Opinion: Public health doctors must be held accountable for reopening schools with unsafe ventilation, says group of health experts, scientists

Students rush into an elementary school on Tuesday, January 18, 2022. THE CANADIAN PRESS/Paul Chiasson 
Students rush into an elementary school on Tuesday, January 18, 2022. THE CANADIAN PRESS/Paul Chiasson

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Explainer: Where do hydro poles come from?

The devastating storm in southern Ontario and Quebec last weekend damaged thousands of hydro poles across the two provinces. CTVNews.ca gives a rundown of where utility companies get their hydro poles from, as well as the climate challenges in the grid infrastructure.