Teachers union skeptical as Nova Scotia schools poised to return to in-class learning

A empty teacher's desk is pictured in an empty classroom is seen on Sept. 5, 2014. THE CANADIAN PRESS/Jonathan Hayward A empty teacher's desk is pictured in an empty classroom is seen on Sept. 5, 2014. THE CANADIAN PRESS/Jonathan Hayward

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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.