Cool pollen, though.

I'm allergic to pollen.

That's a geranium pollen.

A different pollen signature, if you like, or a different pollen fingerprint.

Tom has a pollen allergy.

I am allergic to pollen.

I have an allergy to pollen.

But pollen forensics can be very subtle.

Perhaps there's more pollen in the city.

They get paid by pollen and nectar, to move that male sperm, the pollen, from flower to flower.

Here are some examples they're very smooth if you look at them of tree pollen that is meant to be carried by the wind.

Pollen is produced by the anthers of flowers.

But anyway, take a look at its pollen.

Now, pollen from plants, which are wind dispersed

The fossilized pollen was not of savanna vegetation.

And of course, they're made to carry this pollen.

Pollen is a flower's way of making more flowers.

So, that's 20 micrometers across, that pollen grain there.

But not all pollen is quite so simple looking.

Like I said, pollen carries the male sex cells.

They build up a static electric charge and the pollen jumps on them and helps spread that pollen from bloom to bloom.

Tree

Tree

Tree

Tree

Tree.

Tree?

First of all, pollen is tiny. Yes we know that.

The pollen has little barbs on it, if we look.

That tells me that it's actually been fossilized, this pollen.

Just how well can masks block the, even smaller than pollen, yellow sand dust? I think it much more of a nuisance than pollen.

So in an apple orchard, for instance, you'll have rows of 10 apples of one variety, and then you have another apple tree that's a different type of pollen.

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