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COLORADO — It's allergy season here in Colorado, and this year seems to bring even higher levels of pollen. March was very dry and gave us warmer than average temperatures. This has allowed for trees ...

Cedar fever is a seasonal allergy common in Central Texas. It happens when the male mountain ashe juniper trees get frisky ...

Imagine trying to tell identical twins apart just by looking at their fingerprints. That's how challenging it can be for scientists to distinguish the tiny powdery pollen grains produced by fir, ...