Oregonian: Pollen coats the leaves of a Japanese maple. With climate change, allergy seasons look to be longer and meaner. If you want to track the Northwest’s changing climate, follow your nose. Early or extended periods of sneezing and wheezing could be signs our world is warming. The environment has a huge impact on human health, influencing everything from the home territory of animals that spread disease to sunburns and skin cancer. And our environment is changing, with notable increases in …