A solution may have been discovered to save frogs from the chytrid fungus (Photo courtesy of the US Fish and Wildlife Service)
Frogs are in trouble. A nasty disease caused by a fungus is wiping out frogs around the world. But researchers might have found a solution. Rebecca Williams has more:
Transcript
Frogs are in trouble. A nasty disease caused by a fungus is wiping out frogs around the world. But researchers might have found a solution. Rebecca Williams has more:
A disease caused by something called chytrid fungus is sweeping through frogs. When the disease moves through a frog population it can wipe out 80% of the entire population. Scientists have been rushing to find something that might help.
Reid Harris is a biologist at James Madison University. He says he’s discovered there are friendly bacteria that live on some types of frogs. And they can kill the fungus.
“It does seem like the pathogen moves in this predictable wave, so you might be able to get out in front of that wave sort of like a fire line.”
Harris says it might be possible to give wild frogs extra doses of the bacteria to fight off the fungus. But first they have to make sure there won’t be side effects.
A layer of smog over upstate New York at sunset on October 21, 2000 (Photo courtesy of the Earth Science and Image Analysis Laboratory, Johnson Space Center)
A new report says smog can contribute to
premature death. Rebecca Williams reports:
Transcript
A new report says smog can contribute to
premature death. Rebecca Williams reports:
Ozone is a main ingredient in smog – it comes from cars and smokestacks and
other sources.
The National Academies of Science report says ozone can send people to the
hospital, and even lead to earlier death. That’s because ozone can damage
your lungs and make it harder to breathe. It can be especially bad for
kids, older people, and people with lung diseases.
Dan Greenbaum is the president of the Health Effects Institute. He worked
on the report.
“It just reinforces the risks of exposure to ozone are there, they’re
significant and people really should be paying attention to alerts when
there are high ozone days.”
Ozone alerts mean even healthy people should avoid working or exercising
outdoors during the day.
The EPA recently tightened the ozone standards. But the agency’s scientific
advisory committee said the standards should be tightened even more.
New research is helping identify chemicals in the environment that
might increase the risk of getting breast cancer. Mark Brush has more:
Transcript
New research is helping identify chemicals in the environment that
might increase the risk of getting breast cancer. Mark Brush has more:
Breast cancer is the leading cause of death for US women in their late
30s to their early 50s. A new study points to 216 chemicals that might
be increasing the risks of getting the disease.
The researchers compiled data from hundreds of animal studies that have
linked environmental pollutants to increases in breast tumors. The
research is published in the journal Cancer.
Julia Brody is with the Silent Spring Institute. She’s the principal
investigator of the new study:
“There really hasn’t been adequate attention to possible environmental
factors in breast cancer. This is a relatively new field of study, so
it’s an area where there’s an enormous knowledge gap.”
Breast cancer rates have been dropping in last several years. And
Brody thinks the rates could drop even more as potential environmental
risks are identified.
New research out of Stanford University says ethanol-based fuels might
not be any better for the environment than gasoline. But as Dustin
Dwyer reports, that’s not expected to stop the drive to increase
ethanol use:
Transcript
New research out of Stanford University says ethanol-based fuels might
not be any better for the environment than gasoline. But as Dustin
Dwyer reports, that’s not expected to stop the drive to increase
ethanol use:
Researchers at Stanford University found that even while ethanol based
E85 fuel can reduce some harmful vehicle emissions, it increases
others.
The study shows that E85 can lead to higher ozone emissions, which
contribute to smog. And the study says that could cause up to 185 more
ozone-related deaths in the U.S. every year.
This isn’t the first study showing the possible hazards of ethanol.
Others have raised concerns about the impact corn-based ethanol could
have on the food supply, and how it could affect land use, but ethanol
supporters say it’s still the best available option to cut down on
foreign oil.
Ethanol remains politically popular, and Detroit automakers have
committed to making up to half of their annual vehicle fleets ethanol-
capable by 2012.
A deer wasting away from Chronic Wasting Disease. (Photo courtesy of Michigan's Department of Natural Resources.)
An elk infected with Chronic Wasting Disease. (Photo courtesy of the Utah Division of Wildlife Resources.)
A disease that infects deer and elk has been alarming wildlife officials and hunters for years. But now it seems the disease could be more dangerous than previously thought. The Great Lakes Radio Consortium’s Christina Shockley reports:
Transcript
A disease that infects deer and elk has been alarming wildlife officials
and hunters for years, but now it seems the disease could be more
dangerous than previously thought. The Great Lakes Radio Consortium’s
Christina Shockley reports:
Chronic Wasting Disease, or CWD, affects the brain tissue of deer and
elk. Sponge-like holes form in the brains of sick animals. The deer
begin to waste away, become weak, and then die.
Since CWD was discovered in Colorado nearly forty years ago, wild deer
in nine other states have tested positive for the disease. Little is known
about CWD – including how to stop it.
What scientists do know is that the infectious proteins-called prions –
thought to cause CWD are found in the brain and spinal cord areas of
infected animals, but officials still don’t have the answer to the big
question.
Judd Aiken is a professor of Animal Health and Biomedical Sciences at
the University of Wisconsin.
“The ultimate question is whether venison from infected animals, CWD infected
deer, poses a risk to humans. Clearly the first question that needed to be
asked and addressed was whether there was infectivity in muscle.”
Recent findings say there is.
Researchers at the University of Kentucky injected muscle from an
infected deer into the brains of genetically altered mice. The mice
displayed signs of CWD. This is the first time the infectious proteins
blamed for CWD have been found in deer meat.
The finding raises questions about whether eating venison is safe.
Researchers including Aiken say the study is important, but has limits.
For example, he says it doesn’t replicate what would happen in real life.
Plus, he says it’s probably unlikely humans can even get CWD. He says
studies suggest it’s difficult for the disease to jump to other species. Still,
he urges caution. Hunters should get the meat tested before they eat deer
from an area where CWD has been found.
“I, in no way, can advocate the consumption of infected deer, and indeed,
I would suggest due to the limitations of the CW tests, I don’t advocate
the consumption of deer obtained from a CWD endemic area.”
Even if the test comes back negative, Aiken says a negative result isn’t
always accurate, and infected animals in the beginning stages of the
disease can look and act normal.
(Sound of sporting goods store)
John White is a deer hunter from Sheboygan, Wisconsin. He’s in the
hunting section of a nearby sporting goods store. White isn’t too
concerned about Chronic Wasting Disease.
“Not a whole lot of people are worried about it. I mean, when it first
came out, some people were a little leery about it and didn’t want to hunt
that year, but they kinda got over it. I’m not really worried about it being
in the meat at all, because by the time the test comes back I’ll probably
have the deer eaten already and then it’s already too late.”
State wildlife officials say… that’s not a good idea. They recommend that
if you hunt deer in areas where the disease has been found, get the deer
tested before eating it. That message hasn’t changed… since learning the
prions could be in the meat. Some argue… it should change.
John Stauber is with a government watchdog group in Wisconsin, and
is co-author of “Mad Cow USA: Could the Nightmare Happen Here?”
He says officials are keeping quiet about the risk of CWD so they don’t
lose revenue from hunting licenses.
A large portion of state conservation agency budgets are dependent on
fees from hunting licenses. He says all deer that die should be tested for
the disease. Stauber also says CWD is a major human health concern.
“The biggest risk might not be the people who would die from
eating venison, but rather, the people who would die from the
contamination of the blood supply. This is a problem that would unfold
not in days or months or years, but even over decades.”
Stauber says it’s just a matter of time before Chronic Wasting Disease
spreads to people… he says some might even have the disease already,
and not know it.
But researchers like Judd Aiken from the University of Wisconsin say
people shouldn’t over-react.
“People should be concerned, but I don’t want people to panic, either. If
you think you may have consumed venison from infected animals, I don’t
think it’s likely that you’ll ever develop a human prion disease.”
But, Aiken says there’s too much we don’t know about the disease, and
since studies can take years to complete, we might be in the dark for a
while longer.
The lead paint on the inside of this apartment window is decades old. Toddlers who swallow lead paint chips risk behavioral disorders, lowered intelligence, and neurological damage. The dust created by opening and closing the window is also toxic. (Photo by Shawn Allee)
Some environmental issues are so old, they almost seem dead. One of those issues is lead paint. It got a lot of press in the 1970’s, but even today there are nearly 300,000 kids with high lead levels. Now the U.S. Environmental Protection Agency wants to protect children when older homes get a facelift. The Great Lakes Radio Consortium’s Shawn Allee has this look:
Transcript
Some environmental issues are so old, they almost seem dead. One of those issues is lead
paint. It got a lot of press in the 1970’s, but even today there are nearly 300,000 kids with
high lead levels. Now the U.S. Environmental Protection Agency wants to protect
children when older homes get a facelift. The Great Lakes Radio Consortium’s Shawn
Allee has this look:
The 1970’s were filled with horror stories of toddlers eating lead paint chips. It was
pretty serious stuff. Children became mentally retarded or even died from it.
You don’t read those stories much anymore.
(sound of kids playing)
But for Chicago lead inspector Earl Coleman, lead paint’s still a daily reality. Today he’s
at this house because a child here tested high for lead. It’s a high priority inspection –
there are eleven children living here… and that’s not all.
“This particular stop’s also a daycare, so we get extra benefits from the fact that it’s not
just a child in the house. All those that come here and get service will benefit from this
inspection.”
Coleman sets up his lead detector.
(beep)
And starts in a children’s room. It’s decorated with Disney knickknacks and pink paint.
As he checks the walls, he explains lead chips aren’t the only danger.
“What happens is, with lead, once it begins to deteriorate, it creates dust, and from that
moment on dust then is spread very easily.”
This invisible dust gets on furniture, clothes and toys, and to a kid, any of these is
fair game for chewing. Coleman eyes the window nearby.
If it’s got lead paint, opening or closing it could spread toxic dust. Two grade-school
girls comb their dolls’ hair while sitting just below the window. Coleman leans over
them to get a reading.
“If a child’s been cooped up in the house all day long and they want to know what’s
going on outside, the best place to look is through the window, so you touch the window,
you sit in the window, and yes, we have lead here.”
A minute ago, this was just a play area, but with this simple check, the girls now are
playing under an official lead hazard. Ingesting dust could be as easy as forgetting to
wash their hands before lunch. The other windows test positive, too.
Luckily, the homeowner qualifies for a free program to replace the windows, but
programs like that don’t reach everybody. That’s why the EPA wants home contractors to
get training before they repair older homes.
Coleman supports the idea. He says, if just opening a window creates a threat, think of
what sanding one can do.
One time, he was called to a building that had just been totally rehabbed.
“It was ready for show. Anybody that would walk through the place would say this place
is beautiful, but he had so much dust still there, that there was fine, fine film in that
place, and the kid got sick because there was still lead dust, all over everything.”
He says the contractor had a great reputation, but just didn’t know any better. Coleman
says that’s pretty common, but some rehab industry reps say the rules aren’t needed.
Vince Butler’s with the National Association of Home Builders. The group also
represents home rehabbers. Butler worries contractors will have trouble paying for
mandatory training. He says those training costs will be passed on to consumers, and
that’ll mean higher prices.
“The concern is that you get frustrated and decide, heck, I’ll just do it myself and do the
best I can. Or, you hire somebody that comes in there and, god forbid, starts sanding
things and burning things to get rid of that paint, and makes the problem much worse
than had a professional had come in and employed what we know to be safe work
practices.”
Butler says unprofessional repairs could leave even more lead dust around.
The EPA doubts that. It says homeowners will still hire professionals because repair
prices won’t rise much.
Meanwhile, advocates support the rules. Anita Weinberg heads a group called Lead-Safe
Illinois. She says children’s health shouldn’t be left to the rehab industry’s voluntary
training. When Weinberg tries making that point to politicians, she often gets frustrated.
Just like everyone else, politicians feel the problem’s ancient history.
“When we go and talk to legislators they often wind up saying, I thought the problem was
solved, and in fact, the problem is that lead doesn’t disappear.”
And Weinberg says even the EPA’s been slow to fight the problem. Congress asked for
these new rules for rehab contractors thirteen years ago.
The EPA will hear comments on the home repair rules over the next few months. In the
meantime, Weinberg and other advocates will push to keep the strongest provisions.
They’ll also ask the EPA to improve follow-up testing.
That way, homeowners can be sure no lead dust was left behind after a rehab.
Weinberg’s not sure whether to be heartened by the EPA’s proposal.
“It’s not depressing in that we really know what we should be doing about it and can
make those efforts. It is depressing that we’re not yet doing it sufficiently.”
That’s even after decades worth of research showing lead poisons children.
Environmentalists say the Bush administration is ignoring the government’s own scientists in new proposed air pollution rules. The rules reject advice to further restrict soot and other fine particle pollution. The Great Lakes Radio Consortium’s Lester Graham reports:
Transcript
Environmentalists say the Bush administration is ignoring the
government’s own scientists in new proposed air pollution rules. The
rules reject advice to further restrict soot and other fine particle pollution.
The Great Lakes Radio Consortium’s Lester Graham reports:
Environmental Protection Agency’s own staff scientists and the
independent Clean Air Scientific Advisory Committee both found the
EPA needed to issue more restrictive rules regarding fine particulate
matter, that’s soot emitted from sources such as diesel trucks and coal-
burning power plants.
After reviewing 2000 studies linking particulate matter to asthma, heart
attacks, and early death for people with heart and lung disease, the
scientists concluded that standards set by the Clinton administration in
1997 did not go far enough to help reduce health risks. Despite that, the
Bush EPA appointees basically plan to keep restrictions where they are.
The power plant industry indicates further restrictions would be a
financial burden to it, and provide only marginal public health benefits.
Environmentalists say the Bush administration’s proposed rules ignore
mountains of medical research showing this kind of air pollution causes
serious health problems.
A blue-green algae bloom. (Photo courtesy of the U.S. Fish and Wildlife Service)
The experts who identified the Ten Threats to the Great Lakes for us
say nonpoint source pollution is one of the worst threats. That’s
pollution that doesn’t come out of a pipe but instead is washed from
streets and farm fields… and lawns. Americans use at least three million of tons
of fertilizer on their lawns every year. But the same compounds that make for a lush,
green lawn can make a stinky, slimy mess when they get washed into lakes and rivers.
Sarah Hulett looks at efforts to limit the amount of lawn chemicals that make their way
into the waterways:
Transcript
In our series, Ten Threats to the Great Lakes, we’ve been looking
at environmental problems affecting the health of the lakes. The Great
Lakes Radio Consortium’s Lester Graham is guiding us through the
issues one-by-one:
The experts who identified the Ten Threats to the Great Lakes for us
say nonpoint source pollution is one of the worst threats. That’s
pollution that doesn’t come out of a pipe but instead is washed from
streets and farm fields… and lawns. Americans use at least three million of tons
of fertilizer on their lawns every year. But the same compounds that make for a lush,
green lawn can make a stinky, slimy mess when they get washed into lakes and rivers.
Sarah Hulett looks at efforts to limit the amount of lawn chemicals that make their way
into the waterways:
When newspaper headlines decried the death of Lake Erie in the 1970’s, Americans got
familiar with a new enemy of the environment. Scientists named phosphorus the major
culprit in the lake’s decline. And the reaction went a long way toward cleaning up the
lake: billions of dollars went into upgrades for wastewater treatment plants to reduce
phosphorus from sewage. And phosphate detergents have been mostly phased out of use.
But now that regulators have gotten a handle on the phosphorus coming from the most
obvious sources, they’re left with a much more difficult task: reducing phosphorus from
countless smaller sources that together add up to a lot of pollution.
One of those sources is lawn fertilizer. And Glenn Short says it’s easy to see what
happens when that fertilizer gets washed into the lake where he lives.
(sound of ducks quacking and waves)
“You have this, like, green slime floating all over the top of the lake water. Just pops up
everywhere and it can fill the entire lake surface – especially in the calmer bays. It can be
just miserable for swimming and things like that.”
Short sits on the board of the Lake Sherwood Association, in southeast Michigan. His
neighbors asked him to lobby the township to pass a ban on phosphorus fertilizer to
reduce the algae that takes over the lake in the summers. But he says at first, he was
reluctant to do it.
“I’m like any other homeowner. I don’t want government telling me what to do with my
own property. If I want a really nice lawn, I felt that I should be able to have one.”
But he started doing some research. And he found that enough phosphorus will
eventually kill a lake.
“Over a period of time, you get more and more organic material growing, you kill it off,
you just start filling up your lake. And eventually you have no lake anymore. You just
have a wetland. Well, I like my lake. I mean, I live on a lake. I like to use my lake.”
So Short drafted an ordinance to ban fertilizers containing phosphorus, and his township
board passed it. Several other local governments in the region have also enacted limits or
outright bans. And the state of Minnesota has statewide limits on phosphorus fertilizers.
It’s an approach the landscape industry calls unnecessary.
Gary Eichen is with Mike’s Tree Surgeons in southeast Michigan. It’s a company that’s
signed onto an initiative aimed at environmentally responsible lawn care.
(sound of spreader)
The company uses zero-phosphorus fertilizer on almost all the lawns it treats. Back at the
office, Eichen says the problem isn’t the chemicals – it’s that most homeowners don’t
know how to use them.
“They purchase from a source that is not educated in what the products are. He goes
home and starts going through this giant label on the back, and most of it might as well
be Egyptian hieroglyphics. He has no idea. So he ends up over-applying or incorrectly
applying.”
Eichen says there would be far fewer problems with runoff if homeowners left fertilizing
to the professionals. And he says it’s tough for the experts to stay in business when
there’s a patchwork of local ordinances to regulate chemicals like phosphorus.
But that’s exactly what the Environmental Protection Agency is asking communities to
do. Brad Garmon of the Michigan Environmental Council says that kind of bottom-up
regulation presents some challenges.
“It’s very difficult to see what’s working and what’s not, and to chart success. And I
know that a lot of the state programs are re-evaluating right now to see if the approach
they’ve been using over the last five or ten years has been working.”
It’ll take at least another five to ten years for Glenn Short to see the results of his
community’s phosphorus ban. The lake he lives on is part of a river system that
eventually dumps into Lake Erie. But he says just like that Great Lake, it’ll be worth the
wait and the effort to see his small lake bounce back to health.
Only about one percent of North American babies are born at home. But a study in the British Medical Journal reports home births can be a safe alternative for low risk women. The Great Lakes Radio Consortium’s Karen Kelly reports:
Transcript
Only about one percent of North American babies are born at home. But a study
in the British Medical Journal reports home births can be a safe alternative
for low risk women. The Great Lakes Radio Consortium’s Karen Kelly reports:
Researchers followed more than 5,400 pregnant women in the U.S. and Canada who were
planning a home birth with a professional certified midwife.
They looked at the death rate of newborns, the number of mothers who ended up in the hospital,
as well as the number of medical interventions used during labor.
They found low risk women who planned to give birth at home had the same likelihood of their
child dying as low risk women who went to the hospital. That’s fewer than two deaths out of
every 1,000 births.
Kenneth Johnson is an epidemiologist with the Canadian government.
“The participants experienced substantially lower rates of epidurals, episiotomies, forceps
deliveries, vacuum extractions, and cesareans.”
Home birth remains controversial in North America. While several Canadian medical societies
endorse home births, the American College of Obstetricians and Gynecologists remains opposed
to them.
Particulate matter is an air pollution problem the EPA is trying to reduce. (Photo courtesy of the National Park Service)
Federal regulators are looking at two plans for reducing the amount of soot in the air. As the Great Lakes Radio Consortium’s Sarah Hulett reports, public health advocates say tougher regulations would prevent thousands of premature deaths from heart and lung disease:
Transcript
Federal regulators are looking at two plans for reducing the
amount of soot in the air. As the Great Lakes Radio Consortium’s Sarah
Hulett reports, public health advocates say tougher regulations would
prevent thousands of premature deaths from heart and lung disease.
One of the plans would cut the amount of pollution in a 24-hour period by more than half. A second plan would allow a little more soot each day, but it would cut the total amount allowed each year. EPA Administrator Stephen Johnson is expected to make a make a choice between the two plans by the end of the year.
EPA researchers looked at the links between air pollution and premature death in nine U.S. cities. Janice Nolen is the director of national policy for the American Lung Association.
“In those nine cities they were estimating that each year, about five thousand people died of particle pollution, where the standards are right now.”
Nolen says the standards EPA is considering would greatly reduce those deaths. The new standards would take effect in the fall of 2006.
A solution may have been discovered to save frogs from the chytrid fungus (Photo courtesy of the US Fish and Wildlife Service)
