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Carbon offsets--reductions of greenhouse gas emissions from an activity in one place to compensate for emissions elsewhere--are a way to address climate change by paying someone else to reduce emissions.
Before 1850, an estimated 16 million salmon and steelhead returned to the Columbia River Basin annually to spawn. Over the past 25 years, the number of salmon and steelhead returning to the Columbia River Basin has averaged only 660,000 per year although annual population levels have varied widely.
Pursuant to a congressional request, GAO provided information on: (1) the efforts that the Environmental Protection Agency (EPA) and the other federal agencies with major cleanup responsibilities have made to set priorities for spending limited cleanup funds at the hazardous waste sites posing the highest...