USDA Guidelines Questioned

  • Professor Paul Marantz says even a small error in the federal food guidelines can have a big public health impact. (Photo courtesy of the USDA)

Some people say the government is partly to blame for America’s obesity problem – because of the federal dietary guidelines. Julie Grant reports on efforts to improve how the government offers nutritional advise to Americans.

Transcript

Some people say the government is partly to blame for America’s obesity problem – because of the federal dietary guidelines. Julie Grant reports on efforts to improve how the government offers nutritional advise to Americans.

You’ve probably seen those colorful food pyramids they put out, the ones that tell you how many servings to have of each kind of food each day. Those recommendations are used by schools, nursing homes, and the federal food stamp program to design menus.

Robert Post works with the U.S. Department of Agriculture, which puts out the food pyramid.

“IT’S THE CORNERSTONE FOR BUILDING HEALTHY EATING PATTERNS. CHOOSING THE RIGHT AMOUNTS OF FRUITS, VEGETABLES, GRAINS, MILK PRODUCTS, AS WELL AS PROTEIN SOURCES SUCH AS MEAT AND BEANS.”

Post says people need to know how to get all the nutrients they need, without over-indulging in foods they don’t need.
That’s why the guidelines also set specific limits on things like salt and fat.

But some researchers think the guidelines actually have the potential to cause harm.

Paul Marantz is professor of epidemiology and population health at the Albert Einstein College of Medicine.
He doesn’t think the guidelines should give specific recommendations about how much fat and salt people should eat.

“THOSE SEEM TO CARRY PRECISION THAT IMPLIES THAT WE HAVE A GREATER DEPTH OF KNOWLEDGE THAN WE ACTUALLY DO, SO PICKING THESE NUMBERS AND REQUIRING THAT PEOPLE HUE TO THESE GUIDELINES IS A PROBLEM.”

Marantz says even a little bit of error in the food guidelines can have a big public health effects.

He and his colleagues wanted to find out the potential impact of past dietary guidelines.

They looked at 1995, when the nutritionists were telling people to avoid fat.

“MOST OF US REMEMBER IN THE OLD FOOD PYRAMID THAT MADE IT QUITE CLEAR THAT THE MOST IMPORTANT THING TO AVOID WAS FAT AND ONE COULD EAT GRAINS AND PASTA AND BREAT AND THE LIKE WITHOUT CONCERN.”

Marantz says Americans did eat more pasta and bread – that added lots of calories, and lots of weight.

His research, which was published in the American Journal of Preventive Medicine, found what Marantz calls a ‘strong correlation’ between the dietary guidelines against fat and obesity in Americans:

“CORRELATION IS BY NO MEANS CAUSATION. WE CANNOT INFER FROM THIS THAT IT WAS BECAUSE OF DIETARY GUIDELINES THAT WE ARE EXPERIENCING THE EPIDEMIC OF OVERWEIGHT AND OBESITY. BUT THE CONNECTION IS STRONG.”

Marantz wants the government to give general advice for healthy eating, but not specific guidelines. He gives the example of sodium. Marantz says no one really knows how much salt is appropriate for each person. But there’s a push to put specific limits on sodium in the new guidelines.

Robert Post of the USDA says anything that gets into the 2010 recommendations will be based on what he calls the Gold Standard of scientific evidence. He says a committee of nutritional experts has been meeting for two years to create the new guidelines…

“WE CAN BE ASSURED THROUGH THIS VERY INTENSIVE REVIEW OF SCIENCE AND THE WEIGHT OF THE EVIDENCE IT PROVIDES THAT THE CURRENT ADVISE ON CARBOHYDRATES FOR EXAMPLE IS BASED ON THE LATEST RESEARCH.”

Post says any recommendations for fat and sodium will also be based on the preponderance of current science. The committee is expected to make its recommendations this summer, and new dietary guidelines should be published by the end of the year.

For The Environment Report, I’m Julie Grant.

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EPA Coal Ash Plan Criticized

  • The new coal ash clean-up project will take four years and cost 268-million dollars. (Photo courtesy of Brian Stansberry)

More than a year ago – when an earthen wall broke at a power plant in Tennessee, 500-million gallons of toxic coal ash and water were spilled. If you compare it to other environmental tragedies – it was 50 times bigger than the Exxon Valdez spill. Half of the coal ash spill’s been cleaned up, but crews are still working to get the rest of it. And as Tanya Ott reports there are concerns about a new plan to deal with the ash:

Transcript

More than a year ago – when an earthen wall broke at a power plant in Tennessee – 500-million gallons of toxic coal ash and water were spilled. If you compare it to other environmental tragedies – it was 50 times bigger than the Exxon Valdez spill. Half of the coal ash spill’s been cleaned up, but crews are still working to get the rest of it. And as Tanya Ott reports there are concerns about a new plan to deal with the ash:

The plan comes from the US Environmental Protection Agency. Clean-up crews would scoop up the ash and put it in the same pit it came from… but the pit’s been reinforced with concrete. What the plan doesn’t call for, though, is a liner to make sure no metals leach into groundwater. Tennessee law and even the EPA’s new proposed coal ash rules require liners.

Craig Zeller is the project manager for the EPA. He says because this pit isn’t new – or expanding – it doesn’t have to comply with the rules. Plus, he says, water testing in the area shows there’s no problem with leaching.

“If, in the future it does show that we need to add a groundwater mediation piece to this, we will!”

Adding a liner after-the-fact could be difficult and expensive. The new clean-up project will take four years and cost 268-million dollars.

For The Environment Report, I’m Tanya Ott.

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A Filmmaker’s Food Waste Story

  • Jeremy Seifert produced the Dive!, a film about food waste and how much of it is actually useful. (Photo courtesy of Dive! The Film)

A film about food waste is catching attention and awards at independent film festivals across the country.

The film’s called “Dive!,” and reviewers are shocked by the film’s statistics about how much edible food that grocery stores toss into dumpsters.
Shawn Allee reports the reviewers are also enthralled by the filmmaker’s personal story about diving after that food.

Transcript

A film about food waste is catching attention and awards at independent film festivals across the country.

The film’s called “Dive!,” and reviewers are shocked by the film’s statistics about how much edible food that grocery stores toss into dumpsters.

Shawn Allee reports the reviewers are also enthralled by the filmmaker’s personal story about diving after that food.

Jeremy Seifert didn’t start dumpster diving to make a film.

A few years ago, friends turned him onto it.
One morning, they surprised him with bags of food pulled from a dumpster.

“And so my entire kitchen floor was covered with meat and salads and I was filled with delight and wonder and I just said, “where do we begin?”

Seifert says he dumpster dived for kicks, but that changed.
Seifert is a filmmaker by trade, and he got a filming assignment at a refugee camp in Uganda.
The kids in the camp had hardly any food.

“They were truly hungry and suffering from hunger. And I came back home and two nights later, I was on my way to a dumpster pulling out a carload of food that had been thrown away. That experience filled me with such outrage, that I felt I needed to do something and my expression was to make a film.”

Seifert’s film picks up after his dumpster diving takes this kind of political turn.
It’s not for kicks anymore; he wants to show our food waste problem is so bad, that his family could practically live off food from grocery stores dumpsters.
He gets advice from experienced divers.

“Rule number one. Never take more than you need unless you find it a good home.”

But, Seifert runs into trouble with this rule.
He can’t let food go …

“I’m tired of it, there’s too much. I only took this much because there’s so much going to waste. It’s almost two in the morning, and I don’t have anywhere to put it, really.
I had to save as much of it as I could. In just a week of nightly diving, we had a year’s supply of meat.”

Guilt wasn’t his only problem.
His wife, Jen, explains a practical one.

“The dumpster stuff is really great. but because there’s such a large quantity of it, it can turn to a lot of work. So there’s like 12 packages of strawberries that I need to wash and freeze and cut. It’s not that big of a deal, but it’s just a lot more work than going to the grocery store and picking up just what you need.”

Seifert says the biggest problem with dumpster diving, was that it changed how he felt about food. One morning, he talked to his young son about it and kept the camera rolling …

“I don’t know if dumpster diving and eating food from the dumpster has made me value food more or value food less because it’s easier now to throw food away because we have so much of it. Part of me, I think I’m valuing food even less.”

“You can’t waste food, Dad.”

“I know, I don’t want to waste food. Do you want to waste food?”

“No.”

“I don’t want to waste food, either.”

Seifert tells me that this scene at the breakfast table haunted him, because maybe he was setting a bad example for his son.

“So it was a crisis moment in my food waste dumpster diving adventures. And so by the time the film was over, I was so tired of food and thinking about food.”

Well, Seifert’s had to keep thinking about food.

His film’s at festivals, and he helps activists get grocery stores to donate to food banks.
But things have changed at Seifert’s house.

He doesn’t dumpster dive so much – instead, he’s started a garden.
That way, his boy can really value what makes it to the dinner table.

For The Environment Report, I’m Shawn Allee.

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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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Pushing the Idea of Pedestrian Malls

  • Last spring, the New York city government decided to close parts of Times Square to traffic, creating pedestrian-only plazas. (Photo courtesy of Sean Marshall)

Since the 1960s or ‘70s, people have flocked to suburban malls to shop and hang out. A lot of cities tried to get people back downtown by keeping cars out—they shut down streets and created pedestrian malls. Nora Flaherty reports the downtown pedestrian malls seldom worked, but some planners think it’s worth a try again.

Transcript

Since the 1960s or ‘70s, people have flocked to suburban malls to shop and hang out. A lot of cities tried to get people back downtown by keeping cars out—they shut down streets and created pedestrian malls. Nora Flaherty reports the downtown pedestrian malls seldom worked, but some planners think it’s worth a try again.

If you go to New York City’s Times Square, you’ll encounter a lot of lights, a lot of noise, throngs of tourists and office workers, and guys hawking theatre tickets…

But these days, you won’t encounter a tangle of cars, cabs, and busses. That’s because last spring, the city government decided to close parts of Times Square to traffic and create pedestrian-only plazas.

Rochelle Paterson works for the city. She says that the extra breathing space suits her just fine.

“I always thought 42nd street was so congested—and sometimes you need a place to sit and just relax.”

Now, New York is densely populated and people are used to walking to get around. It’s busy here. But pedestrian malls in other cities have often attempted to bring crowds into areas that cities wish would be busier.

A few decades ago, cities all over the country were feeling the pain as indoor malls opened in the suburbs….and lots of those cities hoped pedestrian malls would make downtowns centers of activity again.

Poughkeepsie, New York was one; and its mall did end up becoming a center of activity…

Just not the kind they were hoping for. The city shut down traffic. Built a nice pedestrian walkway. But then things went wrong. The city repealed laws against public drunkenness and loitering. A county social services office moved into the mall.

And then came drugs, gangs, and prostitution.

Ron Knapp is the police chief in Poughkeepsie; He was just starting his career in 1974 when the pedestrian mall was first built:

“So you kind of had a tough element out there that you had to deal with. And as those laws loosened up it hurt the mall, and as the businesses further went out, and once you’re in that downhill cycle it’s hard to stop.”

In 1981 Poughkeepsie decided to reopen the area to traffic as part of an effort to—again—revitalize downtown. Most of the 200-or-so American cities that tried out pedestrian malls were not successful. Reid Ewing is a professor of City and Metropolitan Planning at the University of Utah, and he works with the American Planning Association:

“Ped traffic had been light before and businesses not doing that well with people fleeing to the suburbs in the 60s or 70s. And so the ped malls actually exacerbated the problem.”

People thought parking was a hassle. The downtown pedestrian malls were just not convenient.

There have been success stories, though—like Pearl Street in Boulder, Colorado, and Church Street, in Burlington, Vermont. And those successes tended to have a few things in common:

They were not in depressed downtowns; they were in areas where there tended to be a lot of students and tourists, and where people felt safe; and cities needed to provide a lot of activities—things like farmers markets—to bring people in.

In other words, a pedestrian mall could make an already-pretty-nice area, nicer…but it couldn’t pull an area out of the kind of a downhill slide.

….But having learned some tough lessons, a lot of urban planners like Reid Ewing are saying it’s time to try again.

“It’s just consistent with so many things happening today…dealing with climate change, the US obesity epidemic. Getting people out walking who would otherwise get in their cars. It’s a small thing but it’s an important part of this puzzle.”

Planners concede pedestrian malls cannot work just anywhere. But they can work…to make some areas more vibrant, and more environmentally friendly.

For The Environment Report, I’m Nora Flaherty.

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American Automakers Go Small

  • The new Ford Fiesta will get 40 miles per gallon on the highway. (Photo courtesy of Ford Motor Company)

After years of dominating the market for big trucks and SUVs, Detroit automakers are getting into the small car business. Tracy Samilton reports they don’t just aim to compete with Toyota and Honda – they aim to beat them.

Transcript

After years of dominating the market for big trucks and SUVs, Detroit automakers are getting into the small car business. Tracy Samilton reports they don’t just aim to compete with Toyota and Honda – they aim to beat them.

The new Ford Fiesta will get 40 miles per gallon on the highway. That’s several miles per gallon better than the Honda Fit and the Toyota Yaris. Chevy’s Cruze Eco could also hit that magic 40. Erich Merkle is President of Autoconomy dot com – an auto consulting firm. He says Detroit’s new small cars will also be loaded with high-tech features. That could grab the attention of Gen Y, a group of 67 million young Americans.

“And it’s gonna have to be affordable, low-cost of ownership and yeah, if you wanna get them into your vehicle, it’s gotta be cool and have some sex appeal.”

Asian car companies won’t give up their former territory without a fight. Honda may postpone the new Civic in order to boost its fuel efficiency.

For The Environment Report, I’m Tracy Samilton.

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Life Is Rough in the Median

  • Brian Dold works for the Olmsted Conservancy, he says Olmsted designed wide boulevards to be tree and plant friendly. (Photo courtesy of Joyce Kryszak)

Most modern city streets were designed only with traffic in mind. There was little or no attention given to green space. Over time, some cities revamped their streets adding landscaped medians to make them more attractive. But not all cities thought ahead to what it would take to keep those green areas growing. Joyce Kryszak reports, in one city the volunteers who maintain the plants in the medians – are pretty stressed out.

Transcript

Most modern city streets were designed only with traffic in mind. There was little or no attention given to green space. Over time, some cities revamped their streets adding landscaped medians to make them more attractive. But not all cities thought ahead to what it would take to keep those green areas growing. Joyce Kryszak reports, in one city the volunteers who maintain the plants in the medians – are pretty stressed out.

It’s about eight o’clock on a chilly morning. Linda Garwol is dodging two lanes of traffic to take care of the shrubs and trees planted in the City of Buffalo’s Main street medians. At least, what’s left of the greenery.

“Uh, two trees are left. Things have been replanted in some of them,” said Garwol. “It’s a nice project, but it wasn’t well-thought out, obviously.”

Gawrol says just a couple of years after the medians were planted more than 70 of the trees and shrubs have died.

The federal plan that called for the green medians in the street didn’t include money for maintenance or irrigation. The City of Buffalo says it doesn’t have the money to maintain the green strips. Garwol says that’s when she and other volunteers stepped in. But she says there simply aren’t enough of them to get the job done.

“It is tough work. It’s bending, it’s picking up garbage, it’s weeding. So, it’s not easy to get volunteers, especially at this time of the morning. This is the big problem. To avoid the traffic you have to be up early,” said Garwol.

But it turned out that weeding was the least of their problems. Late last summer, it stopped raining. And, the strips are too narrow, the dirt too poor to retain enough water. And… there’s no irrigation system. Unless you count Sister Jeremy Midura. The Catholic nun started braving the traffic to save the wilting landscape in front of her church. Every week day morning at dawn, she tugs five gallon buckets of water between the racing cars.

“They recognize me as the crazy median woman,” said Midura.

“How many of buckets of water do you have to take out there?” reporter. “Well, we use about 12-14 buckets on the larger median across from Catalician Center and our church. Then about ten buckets over by our school area,” said Midura.

But the traffic-dodging nun couldn’t carry enough water for all the two-mile stretch of thirsty plants. By fall, the city finally sent some tanker trucks to water the medians twice a week.

And still trees and shrubs died.

This appears to be a case of bad planning. Experts say anything planted in small medians need to be drought and salt resistant. They have to be planted in the right kind of soil. And irrigation systems should be part of the plan. Otherwise, experts say cities are just throwing away their investment. We wanted to ask the City of Buffalo about that, but the city did not return our calls.

“Right now, we’re walking along what was a Olmstedian bridle-path…”

Frederick Law Olmsted was a 19th century landscape architect. Brian Dold works for the Olmsted Conservancy. Dold says Olmsted designed the boulevard to be tree and plant friendly. It’s thirty feet wide. Two rows of elms arch over the broad, grassy lawn.

Dold says there’s more than enough soil for roots to spread wide and deep and survive droughts. He says, unfortunately, that’s not the case in many urban landscapes today.

“And that really creates an environment where you’re asking too much of a common plant to survive and do well in,” said Dold.

But cities such as Buffalo are learning from their mistakes. The medians now being added down the rest of Main Street will have irrigation systems. A special adaptive soil is being used. And… there’s a good chance the new plantings will survive in the green strip between the lanes of traffic.

For The Environment Report, I’m Joyce Kryszak.

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Predicting the Oil Spill With Supercomputers

  • Pete Beckman says even with some of the fastest computers in the world, the model of the spill could take days to finish. (Photo courtesy of Argonne National Laboratory)

Oil from the big spill in the Gulf of Mexico is starting to turn up in places people did not expect.
That’s making it tough for cleanup crews to stay one step ahead of the oil.
Shawn Allee reports some scientists hope supercomputers might help.<

Transcript

Oil from the big spill in the Gulf of Mexico is starting to turn up in places people did not expect.
That’s making it tough for cleanup crews to stay one step ahead of the oil.
Shawn Allee reports some scientists hope supercomputers might help.

Scientists want to put together a 3D picture of what the gulf oil plume looks like, and they’re using new computer code and supercomputers to do it.

The numbers are getting crunched at Argonne national laboratory outside Chicago.
Pete Beckman runs the computing center there.

He says satellites and water samples give us some information, but we could really use a more complete picture.

“If we know for example that, because of eddies and currents, that things will accumulate at a particular map location, well, that’s where you would send the booms to soak up the oil. If you can concentrate your resources in one place, you’re much more effective.”

Beckman says even with some of the fastest computers in the world, the model of the spill could take days to finish.

For The Environment Report, I’m Shawn Allee.

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New Homes for Chimney Swifts

  • The almost-finished tower awaits its new residents on the grounds of the Orono School District's nature center next to Lake Claussen. (Photo courtesy of Stephanie Hemphill)

There’s one American bird that has an unusual habitat problem. Chimney Swifts have adapted in the past as humans encroached on their territory. But now changes in human behavior are presenting new problems for the birds. And some people are trying to help them adapt again. Stephanie Hemphill reports.

Transcript

There’s one American bird that has an unusual habitat problem. Chimney Swifts have adapted in the past as humans encroached on their territory. But now changes in human behavior are presenting new problems for the birds. And some people are trying to help them adapt again. Stephanie Hemphill reports.

In his dad’s window-and-door warehouse in the Minneapolis suburbs, Derek Meyer is supervising the boys in his scout troop as they build a wooden tower for Chimney Swifts.

They’re using rough plywood to build a narrow box twelve feet high with an opening about a foot square.

Derek is doing this project to earn the rank of Eagle Scout. In the process, he’s learned a few things about the lives of Chimney Swifts.

“They originally lived in hollow trees but when the settlers from Europe came over they started destroying the trees, so they decided to live in the chimneys, and then people started putting wire over their chimneys, so over the last 40 years they’ve lost half of their population.”

Not just wire, but rain caps and other devices to keep moisture and critters out of chimneys.

The new home these boys are building for Chimney Swifts is destined for the nature center next to a nearby school. The school district was planning to tear down an old brick chimney as part of a remodeling project. Rebecca Field found out about that, and she tried to stop it.

“I said, wait a minute, I’m sure there are Chimney Swifts in there and they’re really good birds because they eat about 2,000 insects a day, each of those birds. And their favorite insect is the mosquito.'”

Field is on the board of Audubon Minnesota, and she’d been watching the swifts hanging around the chimney in the evenings. Individually they look like fat cigars with wings, but when they get ready to swoop down into the chimney for the night, there are so many of them, they look like a funnel cloud.

“How they communicate I have no idea, how they put the brakes on when they dive into that chimney so quickly, it’s a mystery but it’s a fun thing to watch.”

In the end the school district decided to leave the chimney up.

So now, a few weeks later, and just in time for the Chimney Swifts to fly back up from the Amazon, the tower is standing on a concrete pad at the school’s nature center.

School naturalist Marleane Callaghan has already brought all her classes, grades three-through-five, to check it out.

“We’ve talked about the bird, what it looks like, the dimension of it, I’ve invited them to come back with their parents to watch in the school parking lot in the evening up at the high school where they’ve left the chimney, and then to walk on down, to be able to identify them.”

This project is part of an effort by Audubon groups all over the country to raise awareness of Chimney Swifts and their need for homes.

In Minnesota, project director Ron Windingstad wants to convince homeowners to make existing chimneys more welcoming. He says people can take the caps off their chimneys during the summer, or just raise them high enough so the birds can fly in from the sides.

Soon these school kids will be able to see the amazing acrobatics of the Chimney Swifts. Windingstad says they hardly ever stop flying, from morning til night. They’ll even sip water and take a bath in a nearby pond, without stopping.

“They’ll scoop down, lower their bill, and fly across it and drink in the water. They’ll use some of these shrubs around here to break off little twigs about the size of a wooden matchstick or toothpick actually, and use that to build their nests, and they do that while flying as well. They are marvelous creatures.”

For The Environment Report, I’m Stephanie Hemphill.

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The Psychology of Traffic and Obesity

  • Dr. Tanya Berry says the thing that most often kept people from walking was the feeling that there are too many cars on the street. (Photo courtesy of Nathan Johnson, iWalk)

Researchers tell us one way to stay trim is to walk more often. But that’s hard in some neighborhoods – maybe sidewalks are bad or there’re no stores to walk to. Shawn Allee found one researcher who thinks what really stops us … is actually in our heads.

Transcript

Researchers tell us one way to stay trim is to walk more often.

But that’s hard in some neighborhoods – maybe sidewalks are bad or there are no stores to walk to.

Shawn Allee found one researcher who thinks what really stops us … is actually in our heads.

Dr. Tanya Berry researches physical activity, and she surveyed people living in Edmonton, Canada.

She calculated how trim or fat they were, then she logged details about their neighborhoods, things like how many stores are nearby and how many cars pass through the area.
Berry says the thing that mattered most, and kept people from walking was a subjective feeling that there are too many cars on the street.

“There was too much traffic in their neighborhoods, it made it difficult to walk, so they chose to jump in their cars and contribute to the traffic problem.”

Berry says her research team will look at how buildings and streets can be designed to make pedestrians feel there’s less traffic than there actually is, and maybe feel more comfortable walking down the street.

For The Environment Report, I’m Shawn Allee.

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