This isn't smog in the air.

It's soil on a hot, windy day.

Losing someone like this lowers our ability to grow crops.

It also releases carbon trapped in the earth and that contributes to climate change.

Seoul Degradations of problem said to affect almost half the world's people.

Look at this tsunami of dust last year in Phoenix, Arizona.

It's the result of a spectacular storm.

For most farmers saw the loss is a creeping problem that's only noticed too late.

Soils are an important for climate change as well, because they saw a lot of carbon that's three times more carbon stored in soil than there actually is in the atmosphere.

So you imagine if all that carbon was released from the soil into the atmosphere, it would have.

This is the runaway climate change that people are concerned about.

So what to do?

Well, we know cows burps are a problem for climate change, but they're dung also helps put carbon back into the soil.

So this mobile dairy in the south of England may prove part of a solution.

It means cow spread their dung across the fields, not leave it in the farmyard.

That way, nutrients and carbon from the past year returned to the soil is the evidence.

This field, with its light stony soil, is depleted from crops grown with chemical fertilisers.

See the much darker, carbon rich soil in the far plowed field previously fertilized by cows.

So we'll erosion a double problem.

Seoul Degradations of Problem said to affect almost half the world's people, but they're dung also helps put carbon back into the soil.

That way.

Nutrients and carbon from the past year returned to the soil.

This field, with its light stony soil, is depleted from crops grown with chemical fertilizers.

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