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...s first described by [[Robert Brown]] in 1828 as the "tremulous motion" of pollen grains (small solid particles of diameter on the order of a micrometer) sus

...us types of [[particulate matter]] derived from sources such as from dust, pollen and spores, sea spray, volcanoes, meteoroids and industrial activities.

...ng chemical hybridizing agents; these chemicals selectively interfere with pollen development, or naturally occurring cytoplasmic male sterility systems." Ar

...eed'') and Solidago (''goldenrod''); ragweed and goldenrod are herbs whose pollen is aggravating to some hay fever sufferers. These are commonly given during

...an uncommon occurrence, usually requiring hard parts (like teeth, bone or pollen), the [[fossil record]] is traditionally thought to provide only sparse and

...nd it in 300 peer-reviewed studies of sea-bed sediments, cave stalagmites, pollen fossils all over the world. And yet we don’t talk about this. We assume t

...ed'') and Solidago (''goldenrod''); ,ragweed and goldenrod are herbs whose pollen is aggravating to some hay fever sufferers. These remedies are commonly giv

...ter) may be more attractive—unless, of course, you are allergic to bees or pollen.</blockquote>"