Zapping Germs Off Your Food

  • Researcher Kevin Keener has been working on a device that turns the air inside food packaging into ozone (Photo by Ken Hammond, courtesy of the USDA)

Researchers are working overtime to find ways to kill dangerous bacteria in food such as Salmonella and E. coli. Rebecca Williams reports one researcher has found a new way to kill bacteria:

Transcript

Researchers are working
overtime to find ways to kill dangerous bacteria in food such as Salmonella and E. coli. Rebecca Williams reports one researcher has found a new way to kill bacteria:

Food processors expose produce like lettuce to ozone for a few seconds or minutes to kill bacteria.

Kevin Keener has been working on a device that turns the air inside food packaging into ozone.

Keener is a food process engineer at Purdue University.

He attaches the device to the outside of food packages – like a bag of lettuce – and applies electrodes that send high voltage through the bag.

“Visually it’s very Frankenstein-ish. It’s a safe process, there is a high voltage, but it’s similar to a spark you’d get with an electric fence.”

Keener says the ozone spends more time with the food so it kills more bacteria.

There’s a problem though – in some of their tests the device turned green spinach white.

So there are a few kinks to work out. But food companies are interested and we might see this commercialized in a year or two.

For The Environment Report, I’m Rebecca Williams.

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Using His Genius for Good

  • Will Allen, founder and CEO of Growing Power, Inc. (Photo courtesy of the MacArthur Fellows Program)

Experts say there’s plenty of food around the world, but nearly a billion people go hungry because of poverty, politics and rising prices. One man is working to change that by teaching people how to grow healthy food, in any climate, anywhere. Erin Toner has more:

Transcript

Experts say there’s plenty of food around the world, but nearly a billion people go hungry because of poverty, politics and rising prices. One man is working to change that by teaching people how to grow healthy food, in any climate, anywhere. Erin Toner has more:

There’s one farm in the whole city of Milwaukee, and it’s
not much to look at.

In the front, there’s a small farm stand and some grungy old
greenhouses. Out back, you’ll find turkeys, chickens and
goats – and all over the place, big piles of compost are
steaming in the cool morning air.

Will Allen runs this inner-city, non-profit farm, called
Growing Power.

We walk into a greenhouse that’s heated by compost, and
Allen pulls back a long sheet of plastic.

“I just opened up a bed and you see this beautiful
spinach growing here, and it’s Wisconsin,” Allen says.

This 59-year-old is a big guy.

He’s 6-foot-7, and ripped from his days playing pro
basketball.

Allen started Growing Power 15 years ago.

It’s a measly two acres, but it’s incredibly productive.

The staff makes compost to heat the buildings, they use
raised plant beds to maximize space, and they grow greens
and raise fish using the same water.

The farm sells a ton of food to restaurants and grocery
stores. It also gives food to local pantries, and sells fruits
and vegetables to neighborhood families at reduced prices.

“We have minorities that are eating processed foods
and getting diabetes and people aren’t living very long
because of you know the negative effects of poor eating
and poor lifestyle and so forth. So we’ve got to change
that,” Allen says.

Allen travels all over the world showing people how to
make what he’s done in Milwaukee work in other places.

The farm’s also become a training ground for local school
kids, interns and backyard farmers.

Last fall, Allen won a half-million-dollar “genius” grant
from the John D. and Catherine T. MacArthur Foundation.

He also gets invited to conferences by former presidents.

So, he’s become a sort of urban farming celebrity.

But you wouldn’t know it.

Allen says he still gets his hands in the dirt every day in
Milwaukee, and he’s always looking for ways to help
people who live here.

Growing Power’s newest project is with Rockwell
Automation, an industrial parts company in Milwaukee.

Every day, 1000 employees eat in the company’s cafeteria,
and that produces a lot of food waste.

Growing Power’s started hauling it away for free.

We’ve arrived at the loading dock of Rockwell Automation
and there’s lots of stuff in here that actually looks like its
still pretty good. There’s a couple buckets full of celery and
onions and a big trash bag full of lettuce.

When we get back to the farm, co-director Jay Salinas
starts unloading the Rockwell scraps.

“Of course a large part of it is compost, but there’s
always something in here that we can feed to the
animals, especially the chickens,” Salinas says.

Growing Power founder Will Allen says his passion for
food comes from his parents.

They made a meager living as sharecroppers near
Washington D.C.

“We fed people – our family and extended family – and
we sold food. So what I’m doing today, when people say
so how do you feel about this McArthur thing you won,
or this Ford Foundation thing or whatever you got, it’s
really my parents. They should be the recipients of
those,” Allen says.

He says it’s really getting back to the way things used to
be, when people ate healthy food that was grown or raised
in their own community.

For The Environment Report, I’m Erin Toner.

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Coal Ash Controversy

  • A broken dam caused this cement-like sludge to spill into the Emory River in East Tennessee. The coal ash sludge could dry out, putting toxic dust into the air. (Photo by Matt Shafer Powell)

This past December a sludge of coal ash broke out of an impoundment at a power plant in
Tennessee. It destroyed homes. It devastated a section of river. And it set off a firestorm
about the problem of coal ash disposal. Now two US Senators and a bunch of environmental
groups are calling on the Environmental Protection Agency to regulate coal ash. Tamara
Keith has the story:

Transcript

This past December a sludge of coal ash broke out of an impoundment at a power plant in
Tennessee. It destroyed homes. It devastated a section of river. And it set off a firestorm
about the problem of coal ash disposal. Now two US Senators and a bunch of environmental
groups are calling on the Environmental Protection Agency to regulate coal ash. Tamara
Keith has the story:

Coal ash is byproduct produced by coal burning power plants and it’s stored at more than 500
sites around the country.

Anti-coal activist Dave Cooper signed onto a letter this week with more than 100
environmental groups telling the EPA it’s time to get involved.

“What we want is for the EPA to regulate coal ash as a hazardous waste.”

But Dave Goss with the American Coal Ash Association says safe storage is an issue, but a
lot of the ash is actually recycled into things like concrete and wallboard.

“If you stigmatize it by giving it some sort of a classification such as hazardous, that’s going
to have a dramatic impact on the ability to re-use the materials.”

The EPA has been studying this issue for years, and hasn’t responded to the latest calls for
regulation.

For The Environment Report, I’m Tamara Keith.

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Farming the White House Lawn

  • Some farmers think this spot is a perfect place for a White House organic farm. (Photo courtesy of Wikimedia Commons)

Some people think American agriculture needs a makeover. They question why we waste so much fuel moving food long distances. A growing movement is calling for farmers and everybody else to produce more locally-grown, organic food. Shawn Allee reports some people want the President to set a good example:

Transcript

Some people think American agriculture needs a makeover. They question why we waste so much fuel moving food long distances. A growing movement is calling for farmers and everybody else to produce more locally-grown, organic food. Shawn Allee reports some people want the President to set a good example:

Last October Michael Pollan published a letter to the President in the New York Times.
Pollan is a sort of agricultural policy gadfly. His open letter to the President was full of big, policy-wonkish ideas about how to encourage local food production. But Pollan also wrote one small suggestion. NPR’s Terry Gross picked up on it.

GROSS: “You would like the next president to instead of having a White House lawn to basically have a White House garden. The president would set an example for the rest of us by having this garden of locally-grown foods?” (laughs)

POLLAN: “Now why is that preposterous, Terry? I mean, that’s actually one of the more practical things I proposed.”

Pollan went into how the President could even share some of his veggies with food banks.

POLLAN:” So you have this powerful image of the White House feeding Americans. What could be better than that?”

Some people heard this interview or read Pollon’s article and thought, “right on” – there should be a White House farmer. One family from central Illinois was especially intrigued. Terra Brockman talked about it with her father and sister.

BROCKMAN: “Well, it’s a great idea, but why don’t we bring it down to earth and make it real?”

ALLEE: “So, basically you translated it into reality by creating a contest on a Web site. White House Farmer dot com, as I understand it.”

BROCKMAN: “Yeah, we figured it was a way that we could get it out nationally without much time or money and ask people all across the country, ‘who do you think would be a good White House farmer?’ and have people nominate their farmers.”

Now, Brockman built her contest Web site even though President Obama never even talked about the idea of a White House farmer. But she’s hopeful because the White House actually has an agricultural past. At one time sheep grazed on the White House lawn, and during World War II Eleanor Roosevelt grew a Victory Garden there.

BROCKMAN: “It’s not like this is so, so way out there. And really, whatever the President does is pretty symbolic and people do pay attention.”

People paid attention to White Houser Farmer dot com, anyway.
The site gathered around 57 thousand online votes in just a few days.
And exactly who is the unofficial new White House Farmer?
That would be Claire Strader, from Madison, Wisconsin.
Strader invited me to see the land she works.

STRADER: “We’re at Troy Gardens. It’s in a parcel of land in the city of Madison, on the North Side. I haven’t actually seen the farm for a few months because the snow’s been so deep.”

ALLEE: “Can we get closer to the farm area?”

STRADER: “Yeah.”

Strader is the head farmer at Troy Gardens. She trains city people to grow food here. She also makes the soil fertile through organic growing techniques.

STRADER: “You can just start to see now, the green flush over the whole field. That’s our cover crop of rye. It looks really good. I’m happy to see it.”
ALLEE: “Could you tear yourself away to go to DC and leave all this behind?”
STRADER: “It would be difficult to pick up and leave it behind, but it would be a tremendous honor and a lot of potential to spread the good word of organic agriculture and the positive impacts that would have on our country in the future. It would be hard to accept and hard to reject.”

Even with a White House Farmer chosen for him, President Obama still hasn’t said anything about the idea.
But Strader says she and some top contest vote-getters are trying to sway him – even if he’d pick someone else to run his garden.
Strader says she loves the idea of cucumbers and zucchinis growing at the White House… even if she’s not there to pick them.

For the Environment Report, I’m Shawn Allee.

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Growing Upward, Not Outward

  • Valcent's vertical farm has hundreds of clear plastic sheets holding pockets of plants. These hang from moving racks. (Photo courtesy of Valcent)

It takes a lot of land to grow
crops. There are concerns there won’t
be enough land to grow all the needed
food for the rapidly growing population.
That’s why some researchers and business
people are creating what they call
vertical farms. Julie Grant reports:

Transcript

It takes a lot of land to grow
crops. There are concerns there won’t
be enough land to grow all the needed
food for the rapidly growing population.
That’s why some researchers and business
people are creating what they call
vertical farms. Julie Grant reports:

On the outside, it looks like a big green house. Inside,
there’s an overhead conveyer system.

It looks kind of like a dry cleaner. Hanging from the moving
racks are hundreds of clear plastic sheets. Each has rows of
pockets. In each pocket, there’s a vegetable plant.

The conveyor moves them around to make sure the plants
get enough light, nutrients and water.

Glen Kertz is president of Valcent Products, which is building
its first commercial-scale vertical farm in Alberta, Canada –
where it can be expensive to truck in fresh produce.

“A couple of hundred years ago, they couldn’t get fresh
lettuce in the dead of winter. But do they want it today?
Yes.”

Kertz and others think we could vertical farm in cities in
skyscrapers.

But Kurtz says the farm’s heat, lighting and conveyor system
all run on fossil fuels and he wants to switch to renewable
energy.

For The Environment Report, I’m Julie Grant.

Related Links

One Genius of a Farmer

  • Will Allen, founder and CEO of Growing Power, Inc. (Photo courtesy of the MacArthur Fellows Program)

An advocate of urban farming will
be able to do more to get locally grown foods
to communities. Chuck Quirmbach reports:

Transcript

An advocate of urban farming will
be able to do more to get locally grown foods
to communities. Chuck Quirmbach reports:

Will Allen founded the group ‘Growing Power’. Allen says the group tries to provide healthful and affordable food to
people who really need it. He says he’s mainly focused on growing and getting food to cities.

“Our rural areas are becoming suburban areas, and cities are getting larger and
growing out into suburban areas. And we have to figure out a way to feed people
with local food, and we need to come up with a just way of doing that.”

Allen says growing food locally and getting better food to people is key to building communities.

Allen is getting help. The MacArthur Foundation has recognized him with one of its ‘genius’ grants. He’ll get a half-
million dollars over the next five years to use as he sees fit.

For The Environment Report, I’m Chuck Quirmbach.

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Eating Right for the Climate

How far your food travels might be less important

than the kind of food you buy. Lester Graham reports on a

new study that looks at the connections between food and

greenhouse gasses:

Transcript

How far your food travels might be less important than the kind of food you buy. Lester Graham reports on a new study that looks at the connections between food and greenhouse gasses:


One of the reasons more people have been buying local food is because it doesn’t travel as far, use more energy and create as much greenhouse gas emissions.


But a study from Carnegie Mellon suggests the kind of food you buy is more important. The study indicates emissions from animals such as methane and nitrous oxides can be as much as twenty times more potent than carbon dioxide from transportation.


Christopher Weber is the lead author of the study.


“Because of smaller amounts of emissions, but more potent emissions of these gasses, it turns out that the CO2 associated with energy to move food around is not as important as these non-energy related greenhouse gasses.”


Weber acknowledges there are more good reasons to buy local food than just greenhouse gas emissions. But cutting down on meat in your diet might reduce greenhouses gasses more.


For the Environment Report, this is Lester Graham.

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Growing Food – Not Lawns

  • Aileen Eilert and her plastic wagon loaded with tomato and pepper starter plants, headed for the subdivision one block over to campaign (Photo by Ashley Gross)

Many environmentalists knock the suburbs. They don’t like how

dependent suburbs are on cars. They don’t like the sprawl, the large

houses and huge lawns. They think it’s a waste of land. Ashley Gross

reports… one woman is on a campaign to see some of those expansive

lawns turned into something a little more productive:

Transcript

Many environmentalists knock the suburbs. They don’t like how

dependent suburbs are on cars. They don’t like the sprawl, the large

houses and huge lawns. They think it’s a waste of land. Ashley Gross

reports… one woman is on a campaign to see some of those expansive

lawns turned into something a little more productive:

(sound of movie music)

Ever since soldiers returned from World War II, the suburbs have been portrayed as
the family-friendly ‘good life.’

“And so they joined the stream of family life in the suburbs. Soon to become part of
its familiar sights. Soon to absorb its familiar sounds.”

One of the most constant of those familiar sounds is a lawnmower.

(sound of lawnmower)

That noise just grates on Aileen Eilert’s nerves. Her goal is to live a more
environmentally-friendly life in the suburbs.

(sound of opening door and walking outside)

She does have a lawn. But she and her husband are converting much of it to
vegetable garden plots.

“So I have some snow peas growing here and here’s you know four tomato plants
and Bruce planted some peppers all the way down here.”

Eilert says gardening means she drives less often to the grocery store – and she’s
not buying produce shipped in from a different continent.

That’s important to her. Eilert says she decided to use less oil after her nephew was
killed in Iraq in 2005.

“You know, we’re fighting over there and it was about oil, and so I just thought I’ve
got to do something. I mean, it’s too late for me to do anything about my nephew,
and he was such a good kid. I’d like it to be where people – oh we don’t need to buy
oil from countries that may not be friendly to us or may not be stable.”

Eilert is not alone. People in the suburbs are beginning to think about their lifestyles
in a different way.

Evan McKenzie is a professor at the University of Illinois-Chicago He researches the
politics of suburbia.

“The stuff that was planned and put in place in the 60s and 70s and even the 80s, I
think in some cases is giving way to new ideas. I mean they’re selling and giving
away rain barrels in the suburbs so people collect rainwater to water their plants
with. I never heard of that before.”

Not everyone is onboard with the environmental movement in the suburbs yet. Last
year Americans spent almost 11 billion dollars on do-it-yourself lawn care just to
keep the grass green.

Aileen Eilert wants to change that. She calls her new campaign “Grow Food, Not
Lawns.”

Her approach is one-on-one. Today she’s pulling a plastic wagon loaded with
tomato and pepper starter plants. She’s headed for the subdivision one block over.

(sound of wagon)

Eilert approaches Tim Lakis as he mows his lawn. He gives him a pepper plant.
Then comes the pitch.

Eilert: “Lawns actually use a lot of chemicals if you put chemicals on your lawn and
that gets into the water system.”

Lakis: “Okay.”

Eilert: “And then also your lawn mower has way more emissions than a car would,
not that I’m saying that…”

Lakis: “Okay, I’ll look it over.”

Aside from some strange looks, that went pretty well.

But Eilert learns pretty quickly there’s way more gardening going on here in this
neighborhood she thought. She’d pegged it as a lawn-addicted wasteland. But this
subdivision’s residents are kinda green.

Eilert: “I assume you use a gas mower?”

Man: “No. Electric.”

Eilert: “Do you? Oh you are just the perfect person to talk to today.”

Woman: “I mean, every year I grow my tomatoes and peppers and zucchinis.”

Second Man: “Every year I try to get rid of more grass and put in more plants.”

Eilert even gets a recipe for cooking dandelions. She leaves the subdivision
encouraged.

“People were concerned and people did think it was a good idea to have gardens
and they’d be willing to make a little more of a sacrifice to make the earth a little bit
better.”

She’ll be visiting more subdivisions soon, trying to get more people to turn those
suburban lawns into gardens. And maybe get them thinking, just a little about other
things they could do.

For The Environment Report, I’m Ashley Gross.

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Color Changing Bacteria Detector

  • A team at Tufts University is working on sensors that could change color to tell you if a bag of lettuce has dangerous bacteria in it. (Photo by Ken Hammond, courtesy of the USDA)

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

Transcript

Researchers are working on a tool
that could tell you if your food is safe
to eat before you break open the bag.
Rebecca Williams has more:

A team at Tufts University is working on sensors that could change color to
tell you if a bag of lettuce has dangerous bacteria in it.

The special ingredient is silk. They boiled silkworm cocoons. And made a
thin silk film out of the proteins. The silk film has color changing properties
– like a butterfly’s wing.

Fio Omenetto is the lead researcher. He says it could be possible to activate
the film so it detects the presence of E. coli. Then the film could be put in a
bag of spinach.

“So immediately by looking at color change you will be able to tell whether
the spinach is good to eat or not.”

Omenetto says this is still pretty futuristic at this point. He says it’ll
probably be at least five years before you might see this at the grocery store.

For The Environment Report, I’m Rebecca Williams.

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Animal-Powered Farming

  • Dan Macon, owner of Flying Mule Farm, and his mule, Frisbee (Photo by Tamara Keith)

With fuel prices through the roof,
many people are changing their routines to
save money. Tamara Keith brings
us this story of a farmer who’s abandoned
his tractor for something much more fuel
efficient:

Transcript

With fuel prices through the roof,
many people are changing their routines to
save money. Tamara Keith brings
us this story of a farmer who’s abandoned
his tractor for something much more fuel
efficient:

“Step up.” (kissing noises)

Meet Dan Macon and his mule Frisbee.

“Frisbee is a 7 year old mule and she was born here at our place. And she got
her name because I promised my oldest daughter, who was then 3, that if she got
up with me when the mule was born she could pick the name.”

“Step up. Good girl.”

On this day Macon and Frisbee are plowing to prepare a patch of land to plant
for the fall. Macon’s Flying Mule Farm is in the California foothill town of
Auburn. And he says it’s 100% animal powered.

“We have a sign now in our farmer’s market stall that says mule powered
vegetables. We use no pesticides, no synthetic fertilizers and no petroleum in
producing our vegetables. And we joke with them that we haven’t harmed any
tractors in producing their goodies.”

He sells his squash, kale, potatoes and other produce at two local farmer’s
markets. He also supplies restaurants in nearby resort towns.

At this point Macon is only farming a quarter of an acre, but hopes to expand
soon. He holds a pair of leather reins as he follows Frisbee in circles around
the small field. He directs her movements with vocal cues, kissing sounds and
pressure applied to the reins. And it seems to work, some of the time.

Tamara Keith: “Seems like it could be a matter of debate as to who’s in
charge.”

Dan Macon: (laughs) “Well as I tell people who have seen pictures of us
doing it, the mule’s the one with the long ears and the guy in the hat is the
jackass.”

Macon has been farming for 7 years and, until this year, he used a gas and
diesel powered tractors. He made the switch for philosophical reasons rather
than economic ones, but it’s penciling out financially too.

“And then diesel went to $5 a gallon and it seemed like a really good
decision.”

And Macon isn’t the only farmer doing this. Animal powered farming,
particularly with horses, is growing in popularity nationwide.

Lynn Miller is editor of the Small Farmer’s Journal. He says 400,000 people
are using animals to farm, and only half of them are Amish.

“I’m predicting within two to three years an additional quarter of a million
people will join the ranks of those who choose animal powered, not as a
throwback, not a return to a nostalgic past, but because it is a practical and
viable option for the future.”

Macon uses organic farming practices, but Frisbee kind of fertilizes the soil as
she goes – if you know what I mean. So, his produce can’t be certified
organic. Macon says he isn’t concerned about his lack of certification.

“I think knowing your farmer is far more important to food safety than any
regulatory program. And if you know your farmer, and your farmer stands
behind what he or she is producing for you, then you’re going to be insured of a
safe product, and that’s how our relationship works with our customers.”

There are other advantages to farming with a mule, says Macon. He’s not
much of a mechanic, so when his tractor broke down in the past he’d have to
call someone to repair it. Now if his source of traction has a problem, he can
just call his wife. She’s a large animal veterinarian.

For The Environment Report, I’m Tamara Keith.

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