New research shows that animals exposed to a chemical found in plastics are more likely to develop prostate cancer later in life. Scientists say their research is the first to find such a link.
The GLRC’s Mark Brush has more:
Transcript
New research shows that animals exposed to a chemical found in plastics are more likely
to develop prostate cancer later in life. Scientists say their research is the first to find
such a link. The GLRC’s Mark Brush has more:
The chemical is known as bisphenol A. And it’s used to make the hard plastic found in
everything from microwave cookware to baby bottles to CDs – just to name a few. The
researchers say that rats exposed to this chemical in their mother’s womb are more likely
to develop prostate cancer as adults. They say the rats were exposed to low doses of the
chemical, similar to the levels found in humans.
Gail Prins headed up the study published in the journal Cancer Research.
“I want to take a lot of caution. I’m not saying that I have evidence that this is causing
human cancers, I’m just saying it’s part of the body of evidence that these type of
chemicals and exposures may be a contributing factor.”
Prins says it’s difficult for people to avoid these chemicals because they’re in products
we use everyday. But she says plastic containers tend to release more chemicals when
they are heated.
Scientists have found that microwave popcorn could be a source of a chemical that might cause cancer in humans. The GLRC’s Mark Brush has more:
Transcript
Scientists have found that microwave popcorn could be a source of a chemical that might
cause cancer in humans. The GLRC’s Mark Brush has more:
(sound of microwave popcorn)
Alright, I like microwave popcorn too, and I don’t like where this study is going, but the
Food and Drug Administration found that the grease-resistant coating inside microwave
popcorn bags can get into the popcorn oil. The coating is made with chemicals similar to
those found in non-stick pots and pans.
Tim Begley is a research chemist with the FDA. He was the lead author on a study
published in the journal Food Additives and Contaminants:
“A microwave popcorn bag is a very, very, very extreme situation, because of the heat
generated on a microwave popcorn bag.”
He’s talking about 400 degrees in just a minute or two. The chemicals used to make the
grease resistant coatings can break down into a suspected carcinogen known as PFOA,
but Begley stresses it is not known whether people are exposed to PFOA after eating a
bag of microwave popcorn. He says more study is needed.
A new study by an environmental group says there are high
concentrations of toxic chemicals called PBDE’s and phthalates inside many cars. The Ecology Center is calling for the chemicals to be phased out. The Great Lakes Radio Consortium’s Tracy
Samilton reports:
Transcript
A new study by an environmental group says there are high
concentrations of toxic chemicals called PBDEs and phthalates inside
many cars. The Ecology Center is calling for the chemicals to be phased
out. The Great Lakes Radio Consortium’s Tracy Samilton reports:
PBDEs are used as flame retardants in auto parts, and phthalates make
plastic parts more flexible. The study found that the heat that builds up
inside a car in the sun causes the chemicals to be released, which
increases exposure to humans.
Jeff Gearhart of the Ecology Center says there are plenty of safer
alternatives and the auto industry should use them. He says there are not
many studies on the effect of the chemicals on humans, but animal
studies show that they hurt reproduction and brain development.
“We should take a precautionary approach and we think that’s the
type of approach that many people take in their own lives.”
A spokesperson for the Alliance of Automobile Manufacturers says
flame retardant PBDEs make cars safer for people in the event of a fire,
and that PBDEs and phthalates are both safe.
Canada's action to reduce greenhouse gases under the Kyoto Agreement is being slowed as groups are threatening to vote against a budget bill that includes an amendment to the Canadian Environmental Protection Act. (Photo by Kenn Kiser)
Canadian environmental groups fear political opposition may kill the Liberal government’s plan to reduce greenhouse gas emissions. The Great Lakes Radio Consortium’s Karen Kelly reports:
Transcript
Canadian environmental groups fear political opposition may kill the Liberal government’s plan to reduce greenhouse gas emissions. The Great Lakes Radio Consortium’s Karen Kelly reports:
Canada’s opposition parties have created an uproar over an amendment to the government’s latest budget bill. The amendment would change Canada’s environmental protection act. It would allow nontoxic gases which heat up the atmosphere, such as carbon dioxide, to be regulated.
It’s the first step in Canada’s plan to comply with the Kyoto Protocol on climate change. But it’s hit a major roadblock. The Conservatives say they’ll vote against the bill unless that proposal is removed. And if they vote against the budget, the Liberal government may fall.
The Sierra Club’s John Bennett says their aggressive tactics may make it difficult for Canada to make any changes to environmental laws.
“I’m very concerned that because of this, we may actually lose the ability to regulate greenhouse gases in Canada for a long time to come. And that’s the real danger here.”
Canada has committed to reducing its greenhouse gas emissions by 20 percent over the next seven years. But Bennett says it won’t happen without new regulations.
Fuel prices are higher this winter… but corn prices are down. That’s kindling a demand for corn stoves in some parts of the country. The Great Lakes Radio Consortium’s Shamane Mills reports:
Transcript
Fuel prices are higher this winter, but corn prices are down. That’s kindling a demand for corn
stoves in some parts of the country. The Great Lakes Radio Consortium’s Shamane Mills reports:
I always thought corn was something you ate. But I’m watching as my brother-in-law is stoking
his stove with golden kernels…
“In my case I use five gallon pails of corn, then just pour in slowly…”
(sound of kernels spilling into hopper)
I’d never seen a corn stove and my brother-in-law, Steve Springer, says he never thought he’d use
one. Once he did, he was hooked.
“Well, one thing about it is, it’s a renewable resource. Being a farmer myself, it’s something we
grow ourselves. This was in our home when we purchased the home – never had any exposure to
it. Since then, I like it immensely. Kicks out lot of heat.”
Corn stoves first became popular in the 1970’s when corn prices plummeted. There were
problems with the early stoves. Hardened clumps of burned corn, called clinkers, had to be
cleaned up and the corn didn’t burn efficiently.
Today, the stoves are making a resurgence because corn prices are down. New corn stoves are
better than the ones back in the 70’s. The stoves now have an agitator to stir the corn for a more
even burn and fewer clinkers.
Ed Bossert sells corn stoves at a store near where the Springers live. He says business is brisk.
“A lot of people come in to save money, a lot of people come in because it’s a renewable
resource, a lot of people come in because the pollution factor is basically nothing.”
Corn stoves produce less carbon dioxide and soot than burning wood or coal, so they seem more
environmentally friendly. But critics point out that the farm machinery used to grow the corn
burns fuel and generates pollution, so any gain from a cleaner burning fuel may be lost during
planting and harvesting.
While the environmental argument simmers, sales of corn stoves continue to heat up. Bossert says
he now sells as many corn stoves as he does wood stoves.
In larger cities such as Madison, Wisconsin the corn stoves don’t sell as well. At Top
Hat Fireplace & Chimney, only three customers have purchased corn stoves despite the best
efforts of sales staff like Mark Gilligan. Showing off the store’s one and only corn stove model,
he says it’s easy to maintain….
“They actually locate down below an ash drawer. That actually sits down below. There isn’t a
whole lot of ash from these pellet and corn stoves because it uses most of it up.”
Most corn stove dealers say a bushel or two a day will keep the cold away. With corn about two
dollars a bushel, that can seem like a bargain compared to natural gas prices, which are 20%
higher this year. But the initial cost of residential corn stoves can be steep.
Craig Tawlowicz owns Countryside Heating in north-central Wisconsin. He says new corn
stoves can cost two thousand… on up to six thousand dollars.
“So this is a long term investment. Most of the time, turn around savings, usually five to six
years pays off your investment.”
Wood stoves are not only more traditional, but they’re generally cheaper. So, wood stoves are
more popular. At Hearth and Home Fireplaces, Claire Barton says despite that… more customers
are considering corn stoves.
“It certainly makes sense for someone who has grain available to them and many of them will
burn corn as well as oats, wheat, barley, cherry pits. Things like that.”
The National Corn Growers Association promotes a lot of corn products. You’d think corn stoves
might be one of them – but spokeswoman Mimi Ricketts says it’s not one of the 600 items the
group touts.
“The National Corn Growers Association determines its issues based on priorities of member
states. Corn stoves is not one that’s been put on our radar screen. We are aware of them but we
have not actively promoted corn stoves.”
That’s probably because compared to other buyers of corn, such as livestock farms, corn syrup
processors and ethanol makers, corn stoves just don’t use a lot of corn. It’s not considered a big
market for farmers.
Instead, the big sales are going to those who make or sell the corn stoves. And because farmers’
harvest was so large this fall, corn stove retailers have found their cash crop this winter.
Engineers say they have a new system that will extract more energy out of coal-fired power plants. And, they say, it has the added benefit of reducing pollution. The Great Lakes Radio Consortium’s Mark Brush reports:
Transcript
Engineers say they have a new system that will extract more energy out
of coal-fired power plants. And, they say, it has the added benefit of
reducing pollution. The Great Lakes Radio Consortium’s Mark Brush
reports:
Coal-fired power plants convert only one-third of the fuel’s energy
potential into electricity. The rest of that energy is heat that’s
lost out the smokestack. Engineers say they’ve now found a way to
capture that heat, transferring its energy into electricity.
Dan Stinger is president of Wow Energies. He says reducing heat in
smokestacks has an added benefit:
“Not only are we able to generate power from waste heat without
consuming fuel, which is an immediate reduction in pollution. But
we’re also able to knock the temperature out of an exhaust stack or
flue gas, and by doing that we condense out a lot of the pollutants
that normally would be exhausted into the environment up a huge exhaust
stack.”
Stinger says a cooler smokestack means fewer pollutants, such as
mercury and chemicals that cause acid rain and ozone, will be sent up
into the atmosphere. Instead, much of that pollution will be condensed
out and trapped. Stinger says the company plans to install its first
small-scale system by the middle of next year.
For the Great Lakes Radio Consortium, I’m Mark Brush.
The Horicon Marsh in Wisconsin - Researchers say global warming may mean earlier ice breakup and spring runoff, more intense flooding, and lower summer water levels. They say this could spell trouble for wetlands and the species that depend on them. (Photo by Ryan Hagerty, USFWS)
Warmer weather might sound like a welcome reprieve to a lot of people spending early spring in the Midwest. But a team of researchers is warning that in years to come, warming trends in the Great Lakes region could be bad news for business, and for people’s health. The Great Lakes Radio Consortium’s Sarah Hulett reports:
Transcript
Warmer weather might sound like a welcome reprieve to a lot of people spending early spring in the
Midwest. But a team of researchers is warning that in years to come, warming trends in the Great
Lakes region could be bad news for business, and for people’s health. The Great Lakes Radio
Consortium’s Sarah Hulett reports:
Climate change is not a phenomenon that’s unique to the Great Lakes
region. But University of Michigan biologist George Kling says there’s
good reason to look to the Midwestern U.S. for early clues about global warming
elsewhere.
“The middle part of North America, including the Great Lakes region, warms, or has warmed in the
past, at a slightly higher rate than the globe overall. Because we’re right in the center of a continent,
and there’s less buffering impact from the oceans. So coastal areas tend to warm a little bit less, at
a slower rate, continental areas warm at a little bit faster rate.”
Kling and other researchers from the Union of Concerned Scientists, and
the Ecological Society of America, spent the last two years looking at
some of the changes that can already be seen in the region: shorter winters,
higher temperatures, and less ice on the Great Lakes during the winter
months. And Kling warns that extrapolating these trends out over the coming
decades paints an ugly picture:
“These climate changes that we project in our new report will magnify
existing health and environmental problems, and may stress our economy.”
Asthma that’s aggravated every time a heat wave hits, increased competition
for groundwater as dry weather saps wells, and financial losses in communities that once relied on
winter tourism are all distinct possibilities. And the report warns that more visible changes to the
landscape might also
be on the way.
Donald Zak teaches ecology at the University of Michigan. He says during
past periods of warming, trees actually moved north to survive. But Zak
says that kind of tree migration may no longer be possible.
“Ten thousand years ago, when species migrated across the region, there
were very few barriers to migration that we have now placed in the landscape –
like large areas of agriculture, large areas of urban development. Those
will become barriers to migration that didn’t exist following the close of the
last ice age.”
Theories about causes of the warmer weather are well known: heat-trapping
gasses – mostly carbon monoxide – are spewed from coal-fired power plants
and gasoline engines. And continued deforestation and urban sprawl help
ensure mother nature never catches up with processing it all. But the researchers who worked on
the project say solutions are available to slow the effects of global warming. The report makes the
case for raising fuel economy standards for cars and trucks. David Friedman with
the Union of Concerned Scientists says right now, there are more than 30 models of cars on the
market that get more than 30 miles per gallon. The problem, Friedman says, is that those are
mostly compact cars that don’t meet the needs of people who are shopping for pickups, minivans,
and SUVs. Friedman says for those customers, there’s no way for them to use their
wallets to show their desire for more fuel-efficient vehicles.
“When your choice is between 17 and 18 miles per gallon, that’s not a
choice. You’re probably going to choose the vehicle based on the color
and the cup holders, not the fuel economy, when the difference is only one
mile per gallon.”
Some critics say the incremental changes that would result from raising
fuel economy standards would have almost no impact on global warming.
But researchers on the Great Lakes study say resistance from policy makers
and corporate leaders doesn’t have to hamper efforts to slow the effects
of climate change. They say even choices at the household level – like
carpooling and conserving energy can help lessen the damage.
For the Great Lakes Radio Consortium, I’m Sarah Hulett.
Within three decades, summers in the Great Lakes states might feel more like summers in Kentucky and Oklahoma. That’s according to results of a two-year study conducted by a team of Midwest and Canadian scientists. The Great Lakes Radio Consortium’s Sarah Hulett reports:
Transcript
Within three decades, summers in the Great Lakes states might feel more
like summers in Kentucky and Oklahoma. That’s according to results of a
two-year study conducted by a team of Midwest and Canadian scientists.
The Great Lakes Radio Consortium’s Sarah Hulett reports:
The study was conducted by the Union of Concerned Scientists and the
Ecological Society of America. Researchers looked into trends that have
already shown up in the region – including shorter winters, higher
annual average temperatures, and declines in winter ice on the Great
Lakes. The study projects potential problems for the region. Anglers
might find certain fish no longer thrive in warmer waters, and
communities that rely on winter tourism might find themselves hard hit.
University of Michigan biologist George Kling is the lead author of the
report. He says the findings point to a warming trend unlike anything
the planet’s seen.
“In the next 100 years, we will have the same amount of warming that has
occurred since the last Ice Age – 10-thousand years ago.”
The report outlines approaches for slowing the effects of global
warming. They include reducing greenhouse emissions and investing in
renewable energy.
For the Great Lakes Radio Consortium, I’m Sarah Hulett.
The U.S. Environmental Protection Agency has approved rules to reduce nitrogen oxide emissions in the Midwest. Environmentalists say in some states the rules aren’t strong enough. The Great Lakes Radio Consortium’s Natalie Walston reports:
Transcript
The U.S. Environmental Protection Agency has approved rules to
reduce nitrogen oxide emissions in the Midwest. Environmentalists say in
some states the rules aren’t strong enough. The Great Lakes Radio
Consortium’s Natalie Walston reports:
Ohio is one of the last of the states in the Midwest to submit rules that
would curb nitrogen oxide emissions. The state’s plan would cut harmful NOx
emissions from power plants and other coal-burning boilers by 120-thousand tons
annually starting in 2004. NOx is blamed for causing smog on hot days.
Environmentalists say the new rules are a positive step… but Ohio should be
one of the first states to cut back emissions year-round, not just during summer
months, as the Ohio plan proposes.
Michael Shore is with the New York-based group Environmental Defense.
“The federal government is really failing to protect our air quality.
So the responsibility is really falling to our states at this point.”
Shore says if Ohio takes action to control NOx emissions year-round,
a domino effect will be created, encouraging other states to follow its example.
For the Great Lakes Radio Consortium, I’m Natalie Walston.
A recent study in the scientific journal Nature suggests the effects of global warming can be seen in people’s backyards. The Great Lakes Radio Consortium’s Erin Toner reports:
Transcript
A recent study in the scientific journal Nature suggests the effects of global warming
can be seen in people’s backyards. The Great Lakes Radio Consortium’s Erin Toner reports:
The study compiles data from scientific papers on climate change and from personal
nature recordings from people all over the world. It finds that plants and animals
appear to be changing their behavior in response to increases in the average global
temperature over the past century.
Michigan State University researcher Kim Hall contributed to the report. She says
for many species, spring events are happening about five days earlier every ten years.
“Those include things like the first arrival dates of birds when they’re migrating into
their summer habitat. Also, sounds, like the first calls of frogs and toads when they
begin the breeding season in the spring. And there’s a lot of different things
related to the timing of plants, such as the first time they bloom in
the spring or when fruits arrive.”
Hall says it isn’t known how earlier springs will affect the environment. But she says they
could spell trouble for many species if food supplies and habitats are not protected.
For the Great Lakes Radio Consortium, I’m Erin Toner.
