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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Peace Out, Plastic Bags

  • Whole foods Store Manager Sherry Wiseman, says her Cleveland store hasn’t had plastic bags since February and her customers have hardly noticed. (Photo by Lisa Ann Pinkerton)

It’s one of the eternal questions, ‘paper or
plastic?’ They’re both recyclable, but only paper
bags come from a renewable resource. And since only
1% of all the plastic bags on earth are actually
recycled, Lisa Ann Pinkerton reports some cities and
even one national company are wondering why we need
plastic bags at all:

Transcript

It’s one of the eternal questions, ‘paper or
plastic?’ They’re both recyclable, but only paper
bags come from a renewable resource. And since only
1% of all the plastic bags on earth are actually
recycled, Lisa Ann Pinkerton reports some cities and
even one national company are wondering why we need
plastic bags at all:

(garbage truck sounds)

Americans send around 100 billion plastic bags to landfills every
year, where they’re supposed to be compacted by bulldozers.

(sound of plastic bag in the wind)

That is, unless they catch the wind and transform into mini
parachutes.

Carmine Camillo is a spokesman for the national company Waste Management.

“The tree lines and fence lines can be littered with bags, until we get
a chance to get out there and clean them up.”

This happens so much around the world, it’s picked up the nickname ‘tree condoms’. Besides that,
they clog storm drains, and
eventually end up in waterways and oceans, where fish
mistake them for jellyfish.

The solution, it would seem, is to recycle them.

But shopper Mary Jo Wickliffe says that’s too much of a hassle.

“You unload your groceries and you go home and throw them away. That’s what I do with them.”

Since Wickliffe shops at the organic market Whole Foods she
says she’s been doing less of that. Because the
chain recently bagged the plastic.

Cleveland Store Manager Chery Wiseman says to stop offering plastic bags is a decision that goes against busines school 101.

“It costs us more money to buy our paper recyclable bags, but we
feel that’s worth it to keep the plastics out.”

Whole Foods’ paper bags are made from 100% recycled content and
shopper Bruce Kane says it’s about time plastic went out of
style.

“I notice that China has fines for stores that use plastics. I think it’s a
positive trend and I’m glad to see it coming to Whole Foods and coming to the
United States.”

The trendsetter in this country is San Francisco. It’s the only city to successfully ban plastic bags.

New York City, Annapolis, Maryland, New Haven,
Connecticut, Santa Monica, and Portland, are looking to shun plastic too. But the bruising the city of Oakland took might make them think twice.

A plastics industry group, called the Coalition to Support Plastic
Bag Recycling sued Oakland over its ban and won. It
claimed the city didn’t do its homework on alternatives such as compost-
able plastic bags or a recycling program.

Sharon Kanise is a spokeswoman for the plastics industry at the
American Chemistry Council.

“We certainly hope that the city of Oakland will work with the state of
California on recycling, because it
doesn’t belong in the roadways, it belongs in the recycling bin.”

Plastic bags are made from petroleum and natural gas, but
Kanise says their manufacture and transport uses 70% less
energy and produces half the carbon dioxide that making paper
bags does.

But for some, choosing between paper and plastic isn’t enough. A few people are starting to shop with reusable cloth bags. Some
stores sell them for about a dollar and Wal-Mart recently gave
away 1 million free to its customers.

But the concept of bringing
their own bags to the store is still foreign to some Wal-Mart
shoppers.

Customer 1: “It really doesn’t matter to me, but I’m going to need a
bigger bag than this.”

Customer 2: “It’s easier just to throw these out and come back to
the store with nothing in our hands.“

Customer 3: “Well, it’s just becoming popular, so I’ll start to.”

Whether it’s paper, plastic, or cloth, each can be environmentally-friendly, if
consumers go to the extra effort. But if people keep throwing them away, local governments might attempt to
reduce plastic bag use. A move the plastics industry will certainly
contest.

For The Environment Report, I’m Lisa Ann Pinkerton.

Related Links

Food Prices to Stay High

  • Corn production in Colorado. (Photo by Scott Bauer, courtesy of the USDA Agricultural Research Service)

Food prices are expected to keep rising in the
coming year. That’s at least partly because farmers plan
to plant less corn. Dustin Dwyer reports:

Transcript

Food prices are expected to keep rising in the
coming year. That’s at least partly because farmers plan
to plant less corn. Dustin Dwyer reports:

Jim Hilker is an agricultural economist at Michigan State University. He says the
demand for corn is high right now.

“Ethanol’s probably the biggest driver of it, but there’s also been very strong corn
exports.”

Hilker says those exports are going to countries where the wheat crop has
come in lower than expected.

But with all the demand for corn, the U.S. Department of Agriculture says
farmers across the country are planning to plant about 8% less
corn this year, compared to last year. Last year farmers did plant more corn
than they had in more than 50 years. This year, corn production should still
be high, but it might not keep pace with demand.

Hilker says that could mean higher prices for food.

But he says there are a lot of other factors to consider when it comes to
food prices. He says gas is a big one, since food has to be transported.

For The Environment Report, I’m Dustin Dwyer.

Related Links

Food Prices on the Rise

  • Produce section of a supermarket in VA. (Photo by Ken Hammond, courtesy of the USDA)

Food prices are going up worldwide. A new survey
by the American Farm Bureau Federation finds supermarket
checkout costs have risen nearly 8% this year.
Julie Grant has more:

Transcript

Food prices are going up worldwide. A new survey
by the American Farm Bureau Federation finds supermarket
checkout costs have risen nearly 8% this year.
Julie Grant has more:

Retail food prices usually increase 3% per year. But over the last year the
cost of flour, cheese, bread, meat, oil, and produce is up – by more than
double the average.

The United Nations has predicted prices will stabilize in the long term. But
that consumers worldwide will face at least 10 more years of rapidly rising
food prices.

Commodity prices for corn, wheat, soybeans and other staples have been
skyrocketing over the past year – to more than double 2006 prices.
The higher costs are due in part to weather affecting crops, and growing
demand in China and India.

Economists also point toward the increased use of grains for ethanol and
other biofuels, putting pressure on food prices.

For The Environment Report, I’m Julie Grant.

Related Links

A Closer Look at Chinese Organics

  • Produce section of a supermarket in VA. (Photo by Ken Hammond, courtesy of USDA)

More companies are importing organic
products from China and other countries. But
contaminated pet food, tainted toothpaste,
and unauthorized antibiotics in fish have been
imported to the U.S. from China. Now, some people are
concerned about organic foods from China. Julie
Grant reports:

Transcript

More companies are importing organic
products from China and other countries. But
contaminated pet food, tainted toothpaste,
and unauthorized antibiotics in fish have been
imported to the U.S. from China. Now, some people are
concerned about organic foods from China. Julie
Grant reports:

When you see that round USDA organic seal on a carton of
milk, boxed foods, or bananas , it means that on some farm,
somewhere, something like this happened:

(farm inspection sound)

Inspector: “All righty. Anything under the box on the far
right.”

Farmer: “That’s the burnout. Which I haven’t used for 3 or 4
years.”

An inspector walks around looking at the greenhouse, the
barn and the fields, in the greenhouse, and in the barn. He
works for an agency that’s accredited by the USDA to certify
farms as organic. He’s making sure nothing is happening on
the farm that’s prohibited by the National Organic Standards.

But small farms like this one are no longer the norm in
organics. Organic products have become a big business all
around the world.

So people are wondering… who inspects those farms?

(store sound)

Sheila Rombach is a buyer for a small natural foods store.
Like a lot of people, she’s a little nervous about the safety of
food coming from China. Last year’s pet food scare and
poisonous toothpaste are still fresh in many people’s minds.

Rombach’s customers pay a premium for ‘organic’ foods.
She wonders how the USDA can certify that farms all the
way in China are following organic rules.

“I guess it crossed mind because of all the negative publicity
about things manufactured in China. I want to be sure that
the items grown under the organic label are truly organic.”

It’s such a concern that one large health food chain, Trader
Joe’s, is taking all Chinese imports off its shelves. Trader
Joe’s plans to have Chinese garlic, ginger, and all other
single-ingredient foods out of its 300 stores this spring.

But the U.S. Department of Agriculture maintains if it says
organic, it’s truly organic. Barbara Robinson is chief
administrator of the USDA’s National Organic Program. She
says foreign products go through the same process as those
grown here.

“So, if the product is coming from India, or the product is
coming from Australia, and you want to market in the United States – then
you need a certifying agent who is accredited by us.”

Robinson says all certifying agents accredited by the USDA
should be enforcing the same organic rules. If a product has
that little round seal, Robinson says consumers can trust it
meets the U.S.’s National Organic Standards.

But enforcing the rules isn’t always that easy. The USDA is
having difficulty making sure those rules are consistently
applied on U.S. farms. So how can the agency be so
confident about farms in other countries?

One expert on Chinese agriculture and politics says that’s a
good question. Paul Thiers is a political science professor at
Washington State University who’s been visiting farms in
China since the early 1990s.

“There is some difficulty, I think, in expecting people from
outside of China to really get far enough in and understand
what’s going on in political and economic conditions of rural
China.”

Thiers says many Chinese farms are run by the local
government. Others are run by private managers with
peasant farmers working the land.

“In some places, peasant farmers who were purported to be
part of organic production, who were on land that was
certified, couldn’t tell me what organic was, had no
conception of different production standards. And all they
said was, ‘we just sell our product to the government’.”

Thiers says at that time, five or ten years ago, farmers were
probably using chemicals, even though they were selling
food labeled organic.

Thiers expects that China’s organic farming practices are
improving, though. He says people in Chinese cities are becoming
concerned about food safety and want to buy organics. But
the USDA has to rely on organic certifiers in China. And with
the rapid growth of organic farms, no one is sure they’re
actually meeting U.S. standards.

Thiers says there is one consolation. At least organic farms
are inspected by someone. Conventional farms don’t get
those kinds of visits from inspectors.

For The Environment Report, I’m Julie Grant.

Related Links

Feds Want Control of Food Labeling

A bill that would pre-empt states’ rights to label food is making its way through Congress. Most of the states’ Attorneys General have signed a petition opposing the law. The GLRC’s Lester Graham reports:

Transcript

A bill that would pre-empt states’ rights to label food is making its way
through Congress. Most of the states’ Attorneys General have signed a
petition opposing the law. The GLRC’s Lester Graham reports:


The sponsor, Michigan Republican Mike Rogers, says the National
Uniformity for Food Act is an appropriate extension of national
standards protecting food. But if it becomes law it will prohibit states
from telling people about chemicals or additives approved by the FDA,
but likely to be of concern when you buy your groceries.


For example, in California any food that contains chemicals known to
cause cancer or birth defects is required to carry a label saying so.


Another additive – recently approved by the FDA – is carbon monoxide
to help keep the meat looking red. Labels warning about that would not
be allowed under the proposal.


37 state attorneys general have signed a petition opposing the law, saying
the states should be allowed to warn against such chemicals. Opponents
say the bill puts special interests in the food industry before public’s right
to know what’s in their food.


For the GLRC, this is Lester Graham.

Related Links

STUDY: PBDEs FOUND IN SUPERMARKET FOOD

Researchers have found a potential toxin in our food. The Great Lakes Radio Consortium’s Mark Brush has an update on the ongoing concern over brominated flame retardants:

Transcript

Researchers have found a potential toxin in our food. The Great Lakes Radio
Consortium’s Mark Brush has an update on the ongoing concern over brominated
flame-retardants:


Brominated flame-retardants, or PBDEs are used to prevent fires in
everything from couch cushions to computer components. Several studies have
shown that there are higher amounts of these chemicals in Americans than in
people anywhere else in the world.


Researchers from the University of Texas recently tested 32 food items from major
supermarket chains in their area. They published their findings in the journal
Environmental Science and Technology. They found that all products with
animal fat in them, and one soy-based infant formula, were contaminated with PBDEs.


Dr. Arnold Schecter headed up the study. He says the human health effects have yet to
be understood:


“We don’t know whether these levels by themselves or in combination with
other chemicals could be causing human health effects. And, you know, we’re
particularly worried about the most sensitive population, before birth,
nursing infants, and the elderly, or people with special health problems.”


Experts say they’re concerned about these chemicals because they behave a
lot like PCBs, which are known to cause multiple health problems in humans.


For the Great Lakes Radio Consortium, I’m Mark Brush.

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Transgenic Soybean to Reduce Trans-Fats?

Starting in 2006, the government will require nutrition labels on food to also list trans-fats. That’s pushing companies to look at changing how they grow some crops. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

Starting in 2006, the government will require nutrition labels on food to also list trans-fats.
That’s pushing companies to look at changing how they grow some crops. The Great Lakes
Radio Consortium’s Lester Graham reports:


Products containing hydrogenated soybean oil are high in trans-fats. So, Monsanto is designing a
new lower-fat, healthier soybean. Using conventional plant breeding, Monsanto will first do two
thing. One: reduce trans-fats and two: increase healthy monounsaturated fats. Shannon
Troughton is a spokesperson for Monsanto. She says a final step requires genetically altering the
soybean.


“The third phase will take biotechnology techniques and make it completely free or as free as
possilbe of saturated fats.”


Except for a more nutritious rice given to the developing world for free, this is the first time a
grain has been genetically modified for reasons other than economic gain for farmers. Monsanto
indicates the new soy oil will be in products on the grocers’ shelves in about eight years if it’s
approved by government regulators.


For the Great Lakes Radio Consortium, this is Lester Graham.

Related Links

State Pushes Fish Grocers to Warn Consumers

A state government is taking some grocery chains to court to try to force them to post warnings about mercury in fish. The Great Lakes Radio Consortium’s Lester Graham explains:

Transcript

A state government is taking some grocery chains to court to try to force them to post warnings
about mercury in fish. The Great Lakes Radio Consortium’s Lester Graham explains:


Just about any fish has trace amounts of methyl-mercury in it due to pollution. But some predator
fish, such as swordfish, shark, and some tuna have higher levels of mercury. The State of
California is taking five grocery chains that sell fish to court. It wants Kroger’s, Safeway, Trader
Joe’s, Albertson’s and Whole Foods to warn consumers that higher levels of mercury can cause
cancer, birth defects and reproductive harm. Tom Dressler is with the California Attorney
General’s office.


“I mean, one example would be to post a warning at the fish counters where the products are sold.
We’re not asking for warning labels on the packages. We just want a clear, reasonable warning
posted that informs consumers and does some good.”


The case is important because California often leads the nation in setting new standards for
environmental law.


For the Great Lakes Radio Consortium, this is Lester Graham.

New Organic Labels to Hit Store Shelves


The USDA has released its labeling requirements for organic foods. Consumers will have to look at the labels carefully to see just how much of the food is actually organic. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

The USDA has released its labeling requirements for organic foods. Consumers will have to look at the labels carefully to see just how much of the food is actually organic. The Great Lakes Radio Consortium’s Lester Graham reports:


Under the USDA’s National Organic Standards, you won’t be able to just look for the USDA Organic seal. The government agency is allowing four different levels of organic. Only the top two levels can actually use the USDA’s seal. There’s 100-percent organic. And then a product can claim to be “Organic” , but only be 95-percent organic… and still get the USDA Organic seal. Other products can claim “Made with Organic Ingredients” or claim “Some organic ingredients” and show the percentage on the back. Based on marketing history, you can imagine how the label on the front will be able to take advantage of that word “organic” in the “some organic ingredients” statement. Still a saavy consumer will be able to tell just how organic the product is by looking closely at the label. Products with the new labels will soon be on the grocery shelves.