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, ...

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Most gardeners reach for flowers first when they want to help bees and butterflies. That’s not a bad instinct, but trees tend ...

How many different types of pollen are out there? There are a myriad of pollen types out there but only a fraction present a problem. Trees with showy flowers, like those that bear fruit, are ...

It’s that time of year again when bright yellow-green clouds float through the air, turning the shallow waters of Lake Tahoe chartreuse instead of its characteristic blue. It sticks to ...

VERSION OF THAT BILL. WELL, WE’VE BEEN TELLING YOU ABOUT IT FOR WEEKS. PROBABLY BEEN FEELING IT AS WELL. WE ARE IN THE THICK OF ALLERGY SEASON, AND FOR MANY OF US, TREE POLLEN HAS BEEN TAKING ITS TOLL ...

Add Yahoo as a preferred source to see more of our stories on Google. Spring is a beautiful time in Alabama, but not everyone enjoys it. If your eyes are watering and you can’t stop sneezing, you’re ...

If you think you’ve been seeing more pollen in the air, tree seeds on the ground and whirly maple samaras  — more commonly called helicopters — flying through the air this year, you’re probably right.

WASHINGTON — If you suffer from allergies, get ready. Tree pollen levels are likely to spike to high this week, thanks to a stretch of warmer than average weather. This week's weather in the D.C.