Is the automobile Portland's major carbon emission issue?

Portland is sinking a lot of money into its bike plan, but the major issue of carbon emissions does not stem from our automobiles nearly as the impact from our wastes. Major carbon emissions come from our everyday disposal of trash, moving trash, and creating landfills for the trash to be placed. Statistics prove that nearly 50% of our wastes are from the trash we dispose of daily.

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Most Oregon greenhouse gas not what you might think