Cedar pollen.

Cool pollen, though.

Cool pollen, though.

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

It's heeeeeeere... the pollen!!!

He's allergic to pollen.

That's a geranium pollen.

It is corn, corn from far away.

Corn.

Tracking the 'Cedar Pollen Front'

Here's the cedar pollen front.

I am allergic to pollen.

Bt corn is a corn that creates its own pesticide to kill a corn borer.

Corn plasters.

Corn usse?

Corn cracker .

Corn cracker.

Corn liquor!

Pollen can cause severe allergic reactions.

First of all, pollen is tiny.

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

That's not corn.

Here's corn ethanol.

So, not only does each type of pollen look different, but each habitat has a different combination of plants. A different pollen signature, if you like, or a different pollen fingerprint.

The Annual Japanese Agony of Cedar Pollen

Pollen can cause anaphylactic shock when inhaled.

But pollen forensics can be very subtle.

Perhaps there's more pollen in the city.

Corn is the lead in because corn is in just about everything.

I like corn dogs.

I'm allergic to corn.

Corn on the cob.

The corn of Tahlequah.

That corn will grow?

Jonathan Drori Every pollen grain has a story

Probably you are allergic to pollen or dust.

Pollen is produced by the anthers of flowers.

But anyway, take a look at its pollen.

The fossilized pollen was not of savanna vegetation.

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

But the thing that's alarming is a couple of months ago, in Mexico, where Bt corn and all genetically altered corn is totally illegal, they found Bt corn genes in wild corn plants.

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

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

A cedar tree releases clouds of allergy inducing pollen.

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