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, ...

Q: My daughter in East Texas has several red cedars in the field next to her house. When we were visiting at Christmas, two of them were rusty colored all over. What causes that? They looked normal ...

Right now, in late March, the big culprit is tree pollen. The yellow that you’re seeing right now is from our pine trees. But we are also seeing oak and Birch. Weed pollen is considered low right now, ...

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Spring tends to bring a surge in pollen, triggering allergies for millions of Americans. Understanding when different types of pollen are at their highest can help allergy sufferers prepare and manage ...

Evolution has fostered many reproductive strategies across the spectrum of life. From dandelions to giraffes, nature finds a way. One of those ways creates quite a bit of suffering for humans: pollen, ...

Tree pollen — that springtime scourge that coats cars in yellow dust and sends allergy sufferers running to the pharmacy — typically abates by late May in upstate New York. But this spring’s bloom is ...