It's like a little Disneyland for them. It's not like what we see.

I have an allergy to pollen.

I have hay fever.

And that's actually rather useful for forensics and so on.

Now, all this diversity means that you can look at a pollen grain and tell what species it came from, and that's actually quite handy if you maybe have a sample and you want to see where it came from.

I am allergic to pollen.

I'm allergic to pollen.

How does life make the most of things?

Those are the good things, but those aren't the tastiest parts of the wheat.

(Laughter)

Tom has hay fever.

Tom has a pollen allergy.

The vase burst into fragments.

The vase was broken to pieces.

The vase crashed to pieces.

Very showy, to attract lots of insects to do its bidding.

But pollen forensics can be very subtle.

Evolution works that way.

So, different species of plants grow in different places, and some pollen carries further than others.

The vase broke into fragments.

It went up and down, and it really started to accelerate around 70,000 years ago.

They are, you know they get paid for their services.

Fireworks leave a particle trail

And there are flowers that are self infertile.

So these , for example, when you see bees flying around, these little plants and they're collecting pollen, those pollen grains that they're collecting, they pack into their legs and they take them back to the hive and that's what makes the beehive, the wax in the beehive.

How do you know?

Voiceover New Diamond Shreddies cereal.

And they get up to all sorts of tricks.

To my surprise, it did not correlate.

These are little bits of individual grain of pollen there and there, and here is a what you see as one little yellow dot of pollen, when you look in a microscope, it's actually made of thousands of little grains of pollen.

And of course, bees are not the only important factor here.

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

So this, for example, when you see bees flying around these little plants, and they're collecting pollen, those pollen grains that they're collecting, they pack into their legs and they take it back to the hive, and that's what makes the beehive, the wax in the beehive.

What the honey bee does it pollinates, takes nectar from the flower, pollinates another flower, cross pollinates.

The vase fell to the floor and shattered.

A lot of people are dealing with hay fever now.

For example, some deter pests, some help drainage.

Now that's not just deaf children.

So flies love this.

Go get me some breadcrumbs, whole grain.

It's like a little Disney Land for them. It's not like what we see.

And remember that all our cereal crops are grasses as well.

And let's face it, everyone's trying to move towards whole grains.

(Laughter)

It's also very biologically active, as anyone with hay fever will understand.