What are some Environmental issues with the Boreal Cordillera?

I have a project due and i can't find anything on environmental issues with it. This would mean things that harm the environment like coal mining or jobs and objects that cause problems with the environment.What are some Environmental issues with the Boreal Cordillera?Mostly mining, and at that, mostly gold (as per the Klondike Gold Rush). There are also lumber issues from the timber industry cutting out large pieces of forest. A natural problem with the forest comes with the spruce beetle, which destroys... spruce trees. These insects have killed more trees than the logging industry. It has also been damaged by the installation of hydroelectric facilities, and even agriculture in some areas.

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