Tag: grows

Tomato Blight Spreading

  • The blight hitting tomatoes is actually the same blight responsible for the Irish potato famine in the mid-19 century. (Photo by T. A. Zitter, courtesy of Cornell University)

If you’ve been waiting all season
for that quintessential taste of
summer – a juicy, ripe tomato from
the garden – you might be disappointed.
This year a tomato blight has swept
across the Northeast and is moving
into Midwestern gardens and farms.
Julie Grant reports:

Transcript

If you’ve been waiting all season
for that quintessential taste of
summer – a juicy, ripe tomato from
the garden – you might be disappointed.
This year a tomato blight has swept
across the Northeast and is moving
into Midwestern gardens and farms.
Julie Grant reports:

Walk around this outdoor farm market in Cleveland and just say the words ‘tomato blight’ – nearly anyone in earshot has a story to tell.

Susan Myers says her home garden has given over to what she thinks is late blight.

“But it’s pretty serious. I mean, it’s like wiping out everything. I have lots of tomatoes and all the leaves are dropping. I’ve never, ever had that before.”

It doesn’t look like the farmers here are having trouble with tomato blight. Most tables are piled high with bright reds and yellows.

Skip Conant has a beautiful display of heirloom tomatoes – but he’s not sure how many more weeks he’ll have fruit to offer.

Conant: “We definitely have tomato blight. It’s been a cool, wet spring, so, yeah. There’s a fair amount tomato blight.”

Grant: “What does it look like?”

Conant: “You’ll see a yellowing and curling on the leaves and then the stem will turn brown. The plant will become a very brown. Die from basically the inside out or the bottom up.”

It’s hard to tell yet if these Midwestern growers are starting to see the same blight that decimated the northeast tomatoes.

Bill Fry is a plant pathologist at Cornell University. He’s studied late blight for 35 years. Fry says it looks like irregular shaped black spots, and can appear on the leaves or the fruit. It can destroy an entire crop in just a few days.

This is the same blight responsible for the Irish potato famine in the mid-19 century. Growers have seen late blight since then. But Fry says, not at these epidemic proportions.

“The fact that it’s just everywhere is, I think, is the major difference from previous years.”

This wasn’t the first cool, wet spring on record. So, why has the blight so bad this year?

It’s kind of ironic. Fry and his colleagues have been studying the problem and think it’s probably because so many people are gardening. Millions more than just last year. And lots of those people bought tomato plants at stores like Home Depot, Kmart, Lowe’s and Wal-Mart.

“Infected plants were sold throughout the northeast in the box stores. They were transplanted to home gardens and from there the pathogen disbursed to other home gardens, to conventional and organic farms.”

Fry says you might not even notice at the supermarket. Commercial tomato growers spray lots of fungicide to keep away the blight. But organic tomatoes are getting harder to find.

But chefs and tomato lovers who’ve waited all season for those locally-grown heirloom – and especially organic – tomatoes aren’t finding what they want in markets in the northeast.

Back at the Cleveland market, chef and restaurant owner Karen Small has been waiting for tomato season – and it finally hit. She depends on this market for her produce and stops at just about every stand.

But as Small hears farmer after farmer describe what they think is late blight – she’s worried about the weeks to come.

“We’re accustomed to having tomatoes well into September, and maybe that’s not going to happen this year.”

Small plans to go home and rip out the tomato plants in her home garden – after hearing late blight described so many times, she’s pretty sure her tomatoes are infected.

For The Environment Report, I’m Julie Grant.

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Genetically Altered Eucalyptus Trees

  • A company called ArborGen is working on altering Eucalyptus trees, so they can be turned into paper and biofuels more easily. (Photo courtesy of the National Biological Information Infastructure)

There’s already a lot of genetically
modified corn and soybeans out there.
Now, Mark Brush reports, one company
is working on genetically modifying
trees:

Transcript

There’s already a lot of genetically
modified corn and soybeans out there.
Now, Mark Brush reports, one company
is working on genetically modifying
trees:

The company is called ArborGen. And it’s working on altering Eucalyptus trees, so they can be turned into paper and biofuels more easily.

Eucalyptus is native to Australia and New Zealand.

But ArborGen has already got 330 acres of these genetically altered trees planted scattered across the South.

And now it wants the government to allow these trees to flower. And that has people like George Kimbrall worried.

He’s an attorney with the International Center for Technology Assessment. He says if they spread they’ll be bad for the environment.

“They’re water suckers. They don’t allow for much undergrowth. They’re poisonous to most animals. The leaves, the animals can’t eat them. Why would we want the south covered in Eucalyptus trees?”

When eucalyptus was brought over to California – it did become invasive. And there are some reports that it’s invasive in Florida too.

ArborGen says it’s altering these trees so they won’t spread in the wild.

For The Environment Report, I’m Mark Brush.

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Growing a City in a Greener Way

  • Trussville, Alabama Mayor Gene Melton may not be a staunch environmentalist - take a look at his car - but he still thinks greenspace is important in his city (Photo by Gigi Douban)

For many small town mayors, growth is all good. After all, more houses means more tax revenue, more retail, more jobs. One Alabama mayor agrees, but he also recognizes green space is an amenity worth keeping. And for that, the timing couldn’t be better. Gigi Douban reports:

Transcript

For many small town mayors, growth is all good. After all, more houses means more tax revenue, more retail, more jobs. One Alabama mayor agrees, but he also recognizes green space is an amenity worth keeping. And for that, the timing couldn’t be better. Gigi Douban reports:

Here at the grand opening of a subdivision in Trussville, Alabama, a few dozen families gather outside the sales office for the usual ribbon cutting with giant scissors.

(sound of applause and cheers)

Soon, everyone heads down to the Cahaba River. The river literally will be in the backyard of these houses once they’re built. On the river, they’re having a rubber duck race.

(announcement of duck race)

It’s gimmicky, but these days developers will do just about anything to attract potential buyers.

Another developer had approached Trussville about building homes along the Cahaba River, but then the housing market took a nose dive. The developer wanted out.

Trussville Mayor Gene Melton says the city would have been crazy not to buy the land.

“This property was probably going to sell for $35,000 or $40,000 an acre. We got to the point where we were able to acquire this for $4,500 an acre.”

The city could have turned it into an industrial park or zoned it for retail. But instead, they’ll turn it into a greenway. It’ll connect to nearby parks with the river as the centerpiece.

Now, the mayor of Trussville is not a staunch environmentalist, by any measure. He tools around the city in a gas guzzling SUV. He’s pro-development. But, he says, the same way a city needs development, it needs greenspace, too.

“Have you ever flown in to a big city like Atlanta or Los Angeles and for miles and miles all you see is rooftops? Well that’s how not to build a city.”

The Cahaba River watershed stretches through Alabama’s most populous county. Recently, heavy development along the Cahaba has polluted the water. It’s endangered habitats not just here, but downstream. Trussville is very near the headwaters, so what happens there affects the entire river.

Randall Haddock is thrilled about the new greenspace. He’ a field director with the Cahaba River Society, a conservation group. Haddock says the Cahaba River is among the most biologically diverse in the country.

“It turns out that Alabama has more fish species, more snails, more crayfish, more turtles, freshwater snails more than any other state in the US. So when it comes to things that live in rivers, we’re at the top of the list by a long way.”

(sound of people walking near river)

Haddock says all along the Cahaba, he’s seen plenty of examples of how not to build near the river.

He says this greenspace is an example of how easy it is to minimize impact. Keeping grass on the ground not only means a cleaner river, but it might help reduce flooding.

“When you make so many hard surfaces, the water runs off real fast and gets into the river real quick. And you’ve increased the volume of water and the only response that a river can make is to get bigger.”

The bank erodes, the water is polluted and soon, you start to see species diminish.

(sound of high school students)

David Dobbs is the city’s high school environmental science teacher. He takes his students out behind the school to check on the river. The result: a clean bill of health.

“All the little bugs, they end up being food for the fish, and the more they are of the good ones that are here, that means there’s more food for the fish, so therefore there’s more fish, it’s a very healthy part of the river.”

Trussville, like many small towns, still says without growth, there’d be no city. But now they know, that growth has to protect one of its top amenities – the river.

For The Environment Report, I’m Gigi Douban.

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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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Algae Fuel Aspirations

  • A net drags floating algae toward the boat (Photo by Ann Dornfeld)

Algae is attracting a lot of
attention and investment as an alternative
energy source. It grows quickly, contains
a lot of oil, and doesn’t take up valuable
farmland. Ann Dornfeld profiles one company
that’s trying to turn algae into fuel:

Transcript

Algae is attracting a lot of
attention and investment as an alternative
energy source. It grows quickly, contains
a lot of oil, and doesn’t take up valuable
farmland. Ann Dornfeld profiles one company
that’s trying to turn algae into fuel:

I’m standing on a pontoon boat floating just a few feet off the shore of a saltwater bay.
Two men are standing in the waist-deep water around the boat. They’re guiding a layer of
floating algae into a funnel that’s sucking the algae into a burlap bag.

(sucking sound)

It’s an algae harvest – and James Stevens is directing the process. He says they
have to be careful not to suck up young salmon or other animals along with the
algae.

“This junction can be turned on, and it allows me to feed water into a box where
then I can sort and make sure there’s no by-catch actually coming through the
system.”

Stevens is Vice President and Chief Scientist of Blue Marble Energy. It’s
a Seattle start-up trying to turn algae into fuel. Most algae-to-energy researchers
are growing algae in giant tanks. Blue Marble has a different plan: gather algae
that’s already growing in noxious blooms along coastlines.

(sound of waves)

Here in Dumas Bay, not far from Seattle, huge blooms of algae often rot in the
water. That process uses up oxygen and kills marine life. And when the dead algae
washes up on the beach, it creates a smell the neighbors hate.

Blue Marble President Kelly Ogilvie says these algae blooms are common
around Puget Sound – but that’s nothing compared to more polluted waterways
elsewhere in the world.

“And the most recent, I think, salient example was Qingdao, China. And the
bloom that occurred there was, I think, like 800 square miles and they pulled a
million tons out of the water and that is prologue to what is going to be happening
on coastlines across the planet.”

Warmer water can help algae grow, and some scientists think global warming is
contributing to an increase in gigantic blooms. Nutrients from sewage dumping
and fertilizer runoff from farm fields and lawns also help algae flourish.

“If you think about what is actually happening in our oceans, the algae bloom
crisis has just begun. And if we can find a way to turn that new crisis into a
solution to something else, by goodness we’re going to try and make a go at it.”

Most companies doing algae-to-energy research focus on creating biofuels for cars
or jets. Instead of liquid fuel, Blue Marble wants to convert algae into natural gas
and biochemicals.

Along with private investment, Blue Marble has a contract with the Washington
Department of Ecology to collect algae at two bays in Puget Sound.

The department’s Alice Kelly is watching today’s harvest from the beach. She says
her agency hopes this gets rid of the rotten egg smell neighbors have been
complaining about without hurting the ecosystem, the sealife near the shore.

“It’s very important to protect that habitat. So we’re walking a very fine line here
between trying to deal with the excess odor problem and protect the near shore.”

Blue Marble’s approach provides that protection, she says, because its operation is
based just offshore. They aren’t dragging equipment across the beach. And today,
it looks like the only by-catch has been other species of algae.

But some conservationists have big concerns about harvesting wild algae for fuel.

One of them is Kevin Britton-Simmons, a researcher at
the University of Washington. He says a lot of unnatural algae blooms could be
prevented by keeping fertilizer and other pollutants out of the water.

“I feel this is essentially exploiting the problem instead
of fixing it. I’m concerned if we allow a business to develop that’s dependant on
this problem, what’s gonna happen when we fix the problem? Will there then be
pressure for this business to harvest natural populations of algae?”

Natural blooms are a valuable part of the food web, and he says removing them
could rob marine life of a major food source. He says it’s also hard to distinguish
between natural algae blooms and those caused by pollution.

(sound of waves)

Back on Dumas Bay, Kelly Ogilvie says his company has netted nearly 10,000 pounds of algae from the two harvests it’s completed. The next step is to
use bacteria to break down the algae into natural gas and various chemicals.

If all goes as planned, Ogilvie says Blue Marble’s first batch of natural gas will be
ready any day now.

For The Environment Report, I’m Ann Dornfeld.

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Saving Nation’s Seed Supply

  • Multinational corporations started taking control of seeds around thirty years ago. Now, ten corporations own over half the world’s commodity seed supply. (Photo by Scott Bauer, courtesy of the USDA Agricultural Research Service)

Some small gardening businesses
are noticing more customers want organic
and heirloom seeds. Experts think that
trend might be important for the world.
Kinna Ohman reports they believe
those seeds might be the hope of future
food supplies:

Transcript

Some small gardening businesses
are noticing more customers want organic
and heirloom seeds. Experts think that
trend might be important for the world.
Kinna Ohman reports they believe
those seeds might be the hope of future
food supplies:

John Meshna points to a half empty rack of vegetable and flower seed packets in his
store.

“We’ve emptied this thing at least a half a dozen times this year. I thought maybe
we’d have a rush in the spring and that’d be the end of it. And it looks like it’s
going to be going through the winter.”

Meshna owns and runs DirtWorks – a green garden supply business in New Haven,
Vermont. He’s been selling organic and heirloom garden seeds for more than twenty
years. Heirloom seeds come from vegetables that have almost disappeared. And Meshna
thinks people want those types of seeds more and more because they’re worried about our
food supply.

“People call us just to make sure sometimes before they order, now, ‘these are really
organic seeds, right?’ Yeah, it says it right on the label. It’s gonna make you very
happy when you get that package.”

And it’s making certain experts happy too.

Hope Shand is the research director of Etcetera Group. It’s an organization that’s
concerned about corporate control of the food supply. Shand says when more home
gardeners and small farmers grow plants from organic and heirloom seeds, that helps
keep variety in the world’s food supply.

“This is an incredibly important service. People, gardeners, small farmers, urban
gardeners, are conserving, and saving seed diversity. No one else is really doing that
job.”

Hope Shand says multinational corporations started taking control of seeds around thirty
years ago. Now, Shand says, ten corporations own over half the world’s commodity seed
supply. And she thinks that’s risky.

“The seed is the first link in the food chain. Whoever controls the seed literally
controls the world’s food supply. We can’t afford to have the level of vulnerability
and dependence that that entails when we have a handful of multinational seed
companies controlling the world seed supply.”

(sound of watering)

“I’m growing greens without heat.”

At a small organic nursery in Hinesberg, Vermont, Julie Rubaud is one of those who
wants to get these seeds and plants to more people. For her, it’s not just preserving a
strain of a vegetable, it’s trying to match up those plants with the right gardener.

Rubaud grows close to eight hundred varieties of organic and heirloom plants for her
customers. She says that helps her connect people with the right plants for their gardens
and tastebuds.

“I always start out asking, ‘how much room do you have?’ And then I ask them
how they like to eat tomatoes. It’s nice to be able to cater everyone’s garden plan to
their individual needs because we have so many varieties.”

And if next year’s anything like last year, Rubaud will have at least forty varieties of
organic tomato plants ready for new gardens by next spring.

She wonders – with the economy the way it’s been – if one plant might do exceptionally
well.

“There’s Radiator Charlie’s Mortgage Lifter Tomatoes. Have you heard of that
one?” (laughs)

Radiator Charlie’s tomato has been around since the 1940s. You probably won’t find it
at the big-box discount-store gardening department. It’s one of those colorful, hardy,
productive plants that many people think will help bring back variety to our food supply.

For The Environment Report, I’m Kinna Ohman.

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Weevils vs. The Mile-A-Minute Weed

  • The mile-a-minute weed (Photo courtesy of the USDA)

Sometimes biologists fight foreign
pests with other foreign animals. But that
can be risky because it can create a bigger
problem than the one it’s supposed to solve.
Sabri Ben-Achour reports on one of the latest attempts to stop a weedy pest:

Transcript

Sometimes biologists fight foreign
pests with other foreign animals. But that
can be risky because it can create a bigger
problem than the one it’s supposed to solve.
Sabri Ben-Achour reports on one of the latest attempts to stop
a weedy pest:

On farms, backyards, and rights of way up the Eastern Seaboard a pointy leaved thorny
newcomer is becoming increasingly visible. It’s called mile-a-minute weed.

Bob Trumbule is an entomologist. He leads me through a stream valley north of
Washington DC where blackberries and small trees are being swallowed up by this
invasive vine.

“So now we’re getting into the mile-a-minute here. Basically what it does it, it’s an
annual vine, it grows up and over plants, it smothers them, out competes them for
sunlight, and weighs them down.”

The weed is native to Eastern Asia: China and Japan. It was introduced accidentally in
Pennsylvania in the thirties. From there, it’s spread to seven other states. It prevents new
trees from sprouting in forests. But back in Asia, it’s not a dominating species like it is
here.

Judith Hough-Goldstein is a professor at the University of Delaware.

“Part of the reason is because it doesn’t have anything that’s feeding on it. It’s gonna be
without its predators so it can out-compete other plants.”

Over several years, biologists searched for something that would eat the vine. They
found a tiny, black weevil in China. It feeds on the plant and lays it’s eggs there, keeping
things in check – in Asia.

“Here are the weevils. I’m gonna give you a glimpse of them here in the cup. They look
almost like little ticks. I’m gonna put them down here in the mile a minute weed patch,
and basically what they’ll do – they’re tough little guys – they’ll climb around and in the
past experience have started to feed almost immediately.”

Up close, they look like little anteaters, poking around the leaves with long snouts.

This may sound risky. There are lots of examples where similar approaches have gone
wrong. A parasite was introduced in North America to control gypsymoths. It attacked
native silkmoths. Mississippi catfish farmers used Asian carp to control algae. They got
loose and are taking over the Mississippi River system and threatening the Great Lakes.

And Trumbule admits nobody knows for sure exactly what might happen.

“Any scientist that might say otherwise is not being honest with themselves or the person
asking the question.”

But he says a lot’s been learned since the days when any scientist could introduce a
species on a whim. These days, exhaustive testing and federal permits are required
before anything is released.

That’s why for almost ten years Judith Hough-Goldstein has been trying to determine if
the weevil would eat anything else. Tests were conducted in a U.S. Department of
Agriculture ‘quarantine facility’ with sealed windows and its own re-circulated air supply.

“So what we found was that, in fact, this particular weevil is extremely host specific. The
insect has evolved to depend on the plant.”

So much so that the weevils and larvae actually starved to death rather than feed on other
plants.

In field tests in New Jersey and Delaware, the weevils have decimated mile-a-minute
weed. Some researchers say it’s the most impressive biocontrol they’ve worked with.

For The Environment Report, I’m Sabri Ben-Achour.

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Green Fuel From Green Slime

  • Roger Ruan directs the Center for BioRefining at the University of Minnesota. He's experimenting with algae that grow quickly in the nutrients in wastewater. He says the oil-rich algae are a potential source of biodiesel. (Photo by Stephanie Hemphill)

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Transcript

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Roger Ruan has been trying for years to figure out how to turn algae into diesel,
economically. He’s the director of the Center for BioRefining at the University of
Minnesota.

Ruan says there’s no question it can be done; some people are already producing algae
oil. They’re growing it in open ponds. It’s used for pharmaceuticals, food supplements,
and cosmetics.

“Right now, based on an open pond system, per acre per year, you can easily get 5,000
gallons of oil, and soybean would probably give you 50. That’s 100 times difference.”

So algae can be far more efficient at producing diesel fuel than soybeans. But how do
you grow enough algae to make a dent in the nation’s energy demand?

Ruan is turning to an unlikely partner: the local sewage treatment plant.

“Wastewater has lot of nutrients: phosphorus, nitrogen, are all available in wastewater,
and actually you spend lot of money to remove these from wastewater, so if we can kill
two birds with one stone, that would be the best, and that’s what we’re hoping to do.”

(sound of treatment plant)

St. Paul, Minnesota’s sewage treatment plant sits on the bank of the Mississippi River.
The basement of the building where the solids are separated from the liquids is a
brightly lit space. It’s filled with big steel pipes and valves and tanks.

Off to one side, Ruan’s team is setting up a rack of aquariums – the future home of juicy
green algae. When everything is ready, some of the partially-treated waste will be
diverted into the tanks, where it will feed the algae.

The waste is still full of stuff that’s bad for the river, but good for algae.

“It’s got a fair amount of phosphorus, and some ammonia nitrogen that the algae are
going to need.”

Bob Polta is manager of research and development at the treatment plant.

It’s easy to see why he likes this idea: every day the facility has to remove 4 tons of
phosphorus and more than 16 tons of nitrogen from the waste stream.

The algae experiment, if it works, will allow them to do some of that removal in a more
cost-effective way. And this could be the answer to Roger Ruan’s problem of trying to
create enough algae to make enough oil to compete with petroleum diesel.

Polta says there’s a big potential, both for cleaning wastewater and for producing
energy in the same place.

“All the wastewater treatment ponds in the small communities around the state are
essentially using algae to treat wastewater; it’s just that they’re not being harvested. It’s
just that we’re getting two goals together here, and two research groups, one is essentially taking algae and
harvesting the oil and making biodiesel, and the other is using algae as a treatment
scheme, and to see if we can make this thing really fit.”

Polta expects by the end of the year he’ll know more about whether this is a practical
idea.

Roger Ruan says within six-to-ten years someone, somewhere, will be producing diesel
from algae on a commercial scale.

For The Environment Report, I’m Stephanie Hemphill.

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