Pine beetles defying anti-infestation efforts in Alberta

EDMONTON — Mountain pine beetles are still thriving in parts of Alberta and are spreading east despite $300 million and years of effort to thwart the tiny tree-killers.

A new generation of bugs took flight this summer, with some landing in mixed boreal forest close to the Saskatchewan boundary.

Experts have been reviewing the spread of the infestation as the Alberta government plans a new winter campaign to cut, remove and burn stricken trees. Last winter, 170,000 trees were destroyed in a bid to reduce the threat.


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