Bacteria Engineered to Destroy Pollutants

  • Justin Gallivan and his team programmed a type of E. coli bacteria to seek out atrazine in a petri dish, and destroy it, but right now the bacteria is too weak to survive in the wild. (Photo courtesy of the National Institutes of Health)

Scientists have engineered bacteria to seek out and destroy a chemical that pollutes drinking water. Rebecca Williams has more:

Transcript

Scientists have engineered bacteria to seek out and destroy a chemical that pollutes drinking water. Rebecca Williams has more:

Atrazine is a pesticide used on corn, sorghum and sugar cane. It’s one of the most common chemicals polluting water supplies in the US.

Justin Gallivan is a chemist at Emory University. His team genetically engineered a type of E. coli bacteria. They programmed it to seek out atrazine in a petri dish… and destroy it.

He says right now, this engineered bacteria is too weak to survive in the wild.

“It requires quite a bit of care and feeding, as you might say, to survive even in a petri dish. So if it were placed in a more harsh environment, it is extremely likely that these types of organisms would not survive.”

He says using this kind of genetically engineered bacteria to clean up pollution is still a long way off.

For The Environment Report, I’m Rebecca Williams.

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Interview: Helping Honeybees

  • Honey bees pollinate a wide variety of crops throughout the growing season. (Photo courtesy of Scott Bauer, USDA Agricultural Research Service)

Honeybees are in trouble. They’ve been pestered by invasive mites. There are concerns about how agricultural chemicals might be affecting bees. And in recent years there’s been growing concern about the disappearance of honeybees. It’s called Colony Collapse Disorder. Lester Graham talked with Christy Hemenway with Gold Star Honeybees, based in Bath, Maine. Gold Star manufactures bee hives for beekeepers.

Transcript

Honeybees are in trouble. They’ve been pestered by invasive mites. There are concerns about how agricultural chemicals might be affecting bees. And in recent years there’s been growing concern about the disappearance of honeybees. It’s called Colony Collapse Disorder. Lester Graham talked with Christy Hemenway with Gold Star Honeybees, based in Bath, Maine. Gold Star manufactures bee hives for beekeepers.

Lester Graham: Beekeepers expect to lose about fifteen percent of their bees over the winter, but for the past four years a survey by the USDA and the Apiary Inspectors of America has found that winter die-off has been about thirty percent. What’s going on here?

Christy Hemenway: Good question. One of the trickiest things about the Colony Collapse Disorder that most people have heard something about…is it’s difficult to study because it’s primary symptom is that the bees simply disappear from the hive. So there’s not a lot left behind to take to the lab and look at the details. So its primary symptom being that they disappear then the question would be why? and where are they going? That leaves us looking at conditions that bees are being raised in, and what are we doing to them, and with them, and it has left a lot of people scratching their heads, you might say. I think that a shift in the way we look at bees and possibly in the way we farm. If we were to begin farming in a way that supported bees it would begin to eliminate a lot of these things that are sort of dog-piling because it’s just a lot to ask a small insect to carry. And if we could do one less thing wrong, or one thing a little less wrong, then I think that we could really start to turn the tide.

Graham: When you say change farming, what do you mean by that?

Hemenway: Well the idea of industrial agriculture, or mono-cropping, where we’re growing, for instance, if you want to pick on a pretty large target, the California almond groves–it’s about 700-thousand acres of nothing but almonds. It creates an interesting situation. First off, you have to understand that almond trees bloom for just about 22 days out of the year. So if you’re a bee living in the middle of 700-thousand acres of almond trees, what do you plan to eat for the other three hundred and forty-some days of the year? So we’ve created the migratory pollination situation by having to bring bees in to these trees because there’s no way for them to be supported for the rest of the year. So if you’re farm is diverse and has things that bloom throughout the course of the bee season, when you’ve got warm enough weather, then you’re gonna find that your bees have got something to do, and something to eat, something to forage on all year round instead of for twenty two days which means you’ve gotta get ‘em out of there after that twenty-two days.

Graham: Short of keeping bees, is there anything else we can do that can help this situation?

Hemenway: Buy raw local honey from a local beekeper, maybe at a farmer’s market. That’s a great beginning. Another thing is: let your dandelions stand. Dandelions are fantastic–

Graham: Really?

Hemenway: Oh yeah, that’s great bee food, and it’s also some of the earliest food of the season. So don’t run out there with the lawnmower or the weed killer at the first sign of a dandelion, let that stuff go. Because it’s just natural, easy food, you don’t have to plant things for bees, the stuff that comes up all on it’s own is great stuff. So if you’re in any situation where you can let a lawn go a little more towards a meadow instead of a sculpted, barren, green bee-desert, do that. It’s really a wonderful thing to watch happen, first of all, and it’s just good for bees, to let them have that natural forage.

Graham: I’d love you to talk to my neighbors, that would be great.

Hemenway: Why, are they mowing down their dandelions?

Graham: Well they’re frowning at mine, let’s put it that way.

Hemenway: Oh, shame on them.

Graham: Christy Hemenway is with Gold Star Honeybees, thanks very much for talking with us.

Hemenway: You bet, thank you.

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Native Pollinators in Trouble

  • Jeffrey Pettis says while honeybees are a concern because they pollinate crops, the wild plants that rely on native pollinators can be in trouble as well. (Photo courtesy of the US Fish and Wildlife Service)

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Transcript

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Jeffrey Pettis heads up the USDA’s bee lab in Beltsville, Maryland. He says there’s a lot of concern about honey bees because they pollinate crops. But he’s also really concerned about wild native bees, butterflies, bats that pollinate plants in the wild.

“The wild plants that rely on native pollinators can be in trouble as well. So, there’s certainly should be concern for all pollinators in addition to honeybees, which I like to think of as a major agricultural pollinator.”

Pettis says habitat destruction is hitting nature’s wild pollinators hard, but bats are also dying because of white-nose syndrome, a fungus that’s spreading, killing bats by the millions.

For The Environment Report, I’m Lester Graham.

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Food Safety on the Farm

  • The government isn't requiring farms comply with its safety rules yet, but some grocery chains and food distributors are. (Photo courtesy of These Days in French Life CC-2.0)

More than year ago peanut butter made in the southern U.S. sickened hundreds of people and killed as many as nine.
The outbreak set off a scramble to make food safer and the impacts are starting to be felt on the farm.
But it’s not clear how much the push for “food safety” will change anything.
Peter Payette reports.

Transcript

More than year ago peanut butter made in the southern U.S. sickened hundreds of people and killed as many as nine.
The outbreak set off a scramble to make food safer and the impacts are starting to be felt on the farm.

But it’s not clear how much the push for “food safety” will change anything.
Peter Payette reports.

The government is not requiring farms comply with its safety rules yet, but some grocery chains and food distributors are.

Chris Alpers runs two farms in northern Michigan that grow both cherries and apples.
He figures he’ll spend $7,000 getting them certified.
When asked if that will make his fruit any safer he pauses.

“That’s a hard one to answer. I don’t think we’ve had any issues in the past, nor would we if we continue the way we are currently doing things. But I guess the possibility is there that something could happen so certain things they are requiring us to do might make the fruit a little safer I suppose.”

In fact, nobody has ever heard of this region’s main crop making anyone sick.
It’s hard to imagine tart cherries being a little safer.
They grow well off the ground. They’re not picked by hand and are soaked in water on the way to be processed.
Nevertheless, growers along the coast of Lake Michigan will line up this summer to pay inspectors ninety-two dollars an hour to make sure they’re following a list of rules.

These include things like making sure workers only water drink in the orchard and that they wash their hands properly.
Nobody complains the rules are unreasonable.
But Dave Edmondson says they’re impractical.

“They want me to sign a piece of paper that this is going to happen every single day. I can’t guarantee that!”

Edmondson says he’s happy to run his farm according to the new rules but there are limits.

“It’s like the Indy 500 come harvest time. You have to focus on the movement of the fruit and taking care of it.”

There’s also concern in this region about what new rules might do to the growing number of small farms.
There’s a trend here of farmers growing food to sell locally rather than for processing or to ship cross-country.
There’s even a distributor that supplies area restaurants, schools and grocers with local food.
That company, Cherry Capital Foods, is not requiring its farms be certified.

The manager Evan Smith says he doesn’t want to see the local food movement killed with new costs and paperwork.
Smith says they visit farms they work with and he thinks small farms selling to neighbors are not the problem.

“That’s not to say it can’t be better but I’m not sure we’re going to see a significant change in the amount of food-borne illnesses or a decrease in those because quite frankly we’re not seeing that occur right now.”

Still the dangers of a tomato or spinach leaf making someone sick are real.

That’s why Don Coe says it will be better if everyone tries show their farms are clean and safe.
Coe owns a winery and is a Michigan agriculture commissioner.
He says one illness caused by a small farm selling locally would smear the movement.

“That’s my concern, is that we have to have an acceptable level of compliance with good food handling systems. We have to back it up with some kind of inspection service. It doesn’t have to be as rigid as foods going into the major food channels.”

The U.S. Congress might soon decide who needs to pass what sort of safety tests.
Under legislation now pending a farmer selling a few bags of spinach at a farmers market could be subject to the same standards as huge processing plant.

For The Environment Report, I’m Peter Payette.

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Genetically Engineered Orange Juice

  • The Asian Citrus Psyllid is the insect that spreads the disease hurting Florida's citrus crops. (Photo courtesy of USDA-ARS)

Disease is damaging Florida citrus crops. And Mark Brush reports… researchers say the citrus growers need a new kind of disease resistant tree:

Transcript

Disease is damaging Florida citrus crops. And Mark Brush reports… researchers say the citrus growers need a new kind of disease resistant tree:

The disease is called Huanglongbing disease and that’s Chinese for “yellow shoot disease.” It’s spread by a little Asian insect.

Right now, about 4% of the citrus crop in Florida is hit by the disease , but researchers say it can wipe out whole orange groves if it’s not contained.
The National Research Council says long term – growers should plant genetically modified trees that resist the disease.
George Bruening is a plant pathologist at the University of California – Davis and he chaired the study for the National Research Council:

“And so if you had a genetically modified tree, Florida citrus and the people of Florida would be very much ahead, because there would be less use of insecticides, for example.”

Bruening says these types of genetically modified orange trees don’t exist yet. And it’ll take years to develop them and get government approval.

For The Environment Report, I’m Mark Brush.

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Biodiesel Gets Lost in the Shuffle

  • Biodiesel is an alternative fuel that isn't getting much love from Congress. (Photo by Lester Graham)

Biofuels made from corn and soybeans have been bi-partisan political favorites in Washington for years, but Shawn Allee reports, one biofuel’s in political trouble right now:

Transcript

Biofuels made from corn and soybeans have been bi-partisan political favorites in Washington for years, but Shawn Allee reports, one biofuel’s in political trouble right now.

Biodiesel’s made from soybean oil.
It usually gets a one-dollar per gallon federal tax credit, but that expired in December.
Since then, biodiesel makers have been laying off workers.
Alan Yoder manages Iowa Renewable Energy.
Yoder says he’s puzzled Congress has not renewed the biodiesel tax credit especially since other alternative energy sources still get help:

“A lot of alternative fuel projects they’re talking about are really still in the research stage. Biodiesel is on main street. It’s working and there’s production, there’s people using it, people employed. This is big stuff.”

A biodiesel trade group claims the industry’s laid off 22,000 workers.

Congressional aides say there’s support for renewing the biodiesel tax credit, but it got lost in the shuffle during debates on health care and new stimulus spending.

For The Environment Report, I’m Shawn Allee.

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Biofuels in Europe: Part 2

  • Erhard Thäle and his wife grow organic crops like corn, peas and rye in these fields. They’ve lost money the last three years. Thäle know wants to sell his crops for energy. (Photo by Sadie Babits)

Farmers are finding they can
make more money selling crops
for energy than for food. A third
of all corn grown in the US gets
turned into ethanol. It’s tough
to balance the need for energy
and food when millions around
the world die from starvation each
year. Still, farmers are reconsidering
their roles – including in Germany.
In the second part of our three-part
series on biofuels in Europe, Sadie
Babits meets with one German
farmer who wants to make the switch
and become an energy farmer:

Transcript

Farmers are finding they can
make more money selling crops
for energy than for food. A third
of all corn grown in the US gets
turned into ethanol. It’s tough
to balance the need for energy
and food when millions around
the world die from starvation each
year. Still, farmers are reconsidering
their roles – including in Germany.
In the second part of our three-part
series on biofuels in Europe, Sadie
Babits meets with one German
farmer who wants to make the switch
and become an energy farmer:

Erhard Thale jokes a lot about being an organic farmer. It’s about all he can do.

“He has like his corn harvest from two years ago is still lying down on his farm so it’s not sold on the market.”

It’s hard to imagine. We’re outside Ludwigsfelde not too far from Berlin. Thale’s land looks green and healthy – not bad for late fall. But looks can be deceiving. Thale says he’s lost money for the past three years. He blames his land and a volatile world market.

“Then My wife comes and asks, ‘where do we go from here? Piggybank is empty. Money gone.’”

Thale says he can make more money selling his organic corn and rye for energy instead of food. He’s not joking around. There’s a growing movement in Germany to get farmers like Thale to set some of their land aside to grow grains just for energy. There are now areas throughout the country developing so called “bio-energy regions.” The idea is that a community like Ludwigsfelde would produce its energy locally.

Farmers like Thale would sell their grains and manure to a regional bio-energy power plant. Those materials would get turned into green energy. The 20,000 residents who live here wouldn’t have to rely on fossil fuels and they’d cut down on greenhouse gas emissions. Sounds promising. But Thale says he’d build his own plant if he had three million dollars. Then he could keep all the profits from selling energy.

“He needs an uncle in the U.S. with two million euros.” (laughter)

Other farmers, though, are cashing in, finding money in, well, poop.

(sound of milking machine)

A cow chews her cud as an automatic machine does the milking. This milking parlor is part of an agricultural training center here in west central Germany. This is the greenest farm I’ve been on. There’s a bio-energy power plant. Wind turbines and solar arrays.

Klaus Wagner runs the center. He says this cow’s manure is more valuable than the milk.

“That can’t be.”

Wagner sees a growing rivalry between dairy farmers who want to sell milk and those who want to sell manure for biogas.

“I guess that the milk and energy production on the other side belongs together. And those farmers who built 3-4 years ago biogas plant they earn real money now. The biogas plant substitutes the milking production.”

It really comes down to a question of sustainability. How much land here in Germany and, for that matter, the U.S. should be set aside for making energy? It’s not an easy answer. In the long run, if farmers grow grains for energy instead of food, that will impact the food supply and eventually what we pay at the grocery store.

For The Environment Report, I’m Sadie Babits.

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Squeezing More Oil Out of Soybeans

  • Recently, scientists completed a big-picture map of soy's basic genetic make-up. (Photo courtesy of the USDA)

Bio-diesel is supposed to make
big-rigs and trucks run cleaner.
But to make enough biodiesel on
the cheap, we’ll need to get more
oil out of soybeans. Shawn Allee says we could be one step
closer to fixing that:

Transcript

Bio-diesel is supposed to make
big-rigs and trucks run cleaner.
But to make enough biodiesel on
the cheap, we’ll need to get more
oil out of soybeans. Shawn Allee says we could be one step
closer to fixing that:

Tom Clemente is a kind of true-believer in biodiesel. He studies plant biology at the University of Nebraska. Clemente says the problem is, we use pricey soy-bean oil to make biodiesel.

“The downside is there’s just not enough of the oil to really make a dent on petroleum.”

Clemente figures scientists can manipulate genes inside soy beans to boost oil content, but no one knew exactly where the genes are. Recently, though, scientists completed a big-picture map of soy’s basic genetic make-up. Clemente hopes that’ll speed up development of oily soy beans – just for biodiesel.

“Really getting a bio-based sustainable fuel from some sort of cropping system, the production’s going to have be really up there.”

Clemente hopes we get enough biodiesel to clean up the nation’s dirtiest vehicles, such as construction equipment and city buses.

For The Environment Report, I’m Shawn Allee.

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New White House Energy Plan

The White House is pushing
a new clean energy plan as
a way to deal with reducing
greenhouse gases. Mark Brush
reports this new plan might
help future climate legislation:

Transcript

The White House is pushing
a new clean energy plan as
a way to deal with reducing
greenhouse gases. Mark Brush
reports this new plan might
help future climate legislation:

The White House says this new energy plan is all about green jobs. There’s more money for so-called clean coal, and for biofuels, like ethanol.

The government had limited using corn for ethanol. The thinking was using food to make fuel was probably not such a great idea.

But the industry has not been able to move away from corn ethanol as quickly as hoped. So now the Administration is saying, corn ethanol can be okay – if the refineries are more efficient.

Lisa Jackson is the Administrator of the Environmental Protection Agency.

“So this really unlocks the door for advanced biofuel producers, including advanced corn ethanol producers, to make investments and create jobs.”

Allowing more corn to be used for ethanol and investing in new technologies to clean up coal could win the White House some support if and when a climate change bill comes up for a vote.

For The Environment Report, I’m Mark Brush.

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Ethanol Goes to Court in Cali

  • California regulators want car fuels to come from sources that create fewer greenhouse gas emissions. That means corn-based ethanol will soon get a kind of penalty in California's fuel market. (Photo courtesy of the National Renewable Energy Laboratory)

The US government is steadily
increasing the amount of ethanol
used in our gasoline supply.
But Shawn Allee reports
that effort’s hit a roadblock
in the country’s largest gasoline
market:

Transcript

The US government is steadily
increasing the amount of ethanol
used in our gasoline supply.
But Shawn Allee reports
that effort’s hit a roadblock
in the country’s largest gasoline
market:

California regulators want car fuels to come from sources that create fewer greenhouse gas emissions. That means corn-based ethanol will soon get a kind of penalty in California’s fuel market.

Environmental groups like the Natural Resources Defense Council say ethanol should be at a disadvantage. The NRDC’s Roland Hwang says when we grow corn for fuel, farmers overseas plant more corn.

“Someone’s going to cut down a rain forest or convert pasture land or grass land to grow more food. Unfortunately, converting that land will lead to very dramatic increases in global warming pollution.”

Hwang wants the ethanol industry to stop using food crops for fuel.

Ethanol makers are not taking California’s rules sitting down, though; they’ve gone to court. They argue more lenient federal rules on ethanol should trump California’s.

For The Environment Report, I’m Shawn Allee.

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