Vast landscapes, blue skies and mountain peaks that go on forever; there are many reasons why people view national parks as an escape from our everyday lives, but a new report says national parks are not escaping the effects of air pollution.
Vast landscapes, blue skies and mountain peaks that go on forever; there are many reasons why people view national parks as an escape from our everyday lives, but a new report says national parks are not escaping the effects of air pollution.