Tag: ill

Botulism and the Beach

  • The beach looks beautiful... until you stumble on dead birds and fish killed by Type E botulism. (Photo by Rebecca Williams)

A deadly toxin is spreading across
the Great Lakes, killing fish and birds.
Rebecca Williams reports scientists are
trying to put the puzzle together as quickly
as they can:

Transcript

A deadly toxin is spreading across
the Great Lakes, killing fish and birds.
Rebecca Williams reports scientists are
trying to put the puzzle together as quickly
as they can:

(sound of waves lapping the beach)

It’s one of those perfect beach days. Not too hot, not too crowded. Everything’s
just right.

Unless you don’t like rotting fish and dead birds full of maggots.

Hunter Brower is hanging out at this Lake Michigan beach. He says he’s seen a
lot of dead gulls here in recent years.

“It’s disgusting. We’re out here to enjoy our time and it’s just not right.”

The birds and fish are being killed by Type E botulism. Basically, it’s food
poisoning. For about a decade now, botulism has been killing huge numbers of
birds in the Great Lakes.

We’re talking about more than 75,000 birds – and scientists think that’s probably
a very conservative estimate. That’s because birds could be dying and not
reaching the shore. And it’s very hard to know how many fish are getting killed.
They’re harder to diagnose.

“It’s really one of nature’s most potent toxins.”

Mark Breederland is with Michigan SeaGrant. He says some studies show the
toxin can paralyze fish.

“They can actually lose their orientation and be bobbing up and down vertically
and that would be easy pickin’s if you’re a loon.”

Loons and other birds eat those poisoned fish, or, even grosser, they’ll eat the
maggots in dead birds on the beach, and get sick. The toxin can make birds lose
control of their neck muscles. Their heads fall in the water and they drown.

Beaches full of dead fish and birds aren’t great for tourism. But scientists are
more worried about what this means for endangered species – from the giant lake
sturgeon to the tiny piping plover.

Mark Breederland says they’re also worried about the thousands of migratory
birds that get killed on their way south in the fall.

“They’re just driving down their migratory highway, pulling over for a rest stop to
get something to eat, and that’s their last and final resting spot.”

So scientists are trying to pin down what’s going on.

There’s one main hypothesis. It involves some nasty little critters: invasive zebra
mussels and their cousins, the quaggas. They got into the lakes in the ballast
water of foreign ships.

Both mussels suck in lake water and filter it. They’ve made the lakes a lot clearer
than they used to be.

The clearer water means more sunlight can reach the lake bottom, and that
kick-starts algae growth. When the algae die, it sucks oxygen out of the water.
And, all of that is perfect for a bacterium that produces the botulism toxin to go forth
and multiply.

Okay, now, remember those pesky mussels? Scientists suspect they can take in
the toxin but they’re not affected by it. But fish that eat the mussels get sick.

One fish in particular loves to eat mussels. It’s the invasive round goby. And
there are lots and lots of gobies in the Lakes. That could mean lots of poisoned
snacks for bigger fish and birds.

Researchers have a bad feeling about all this, and they’re trying to confirm their
hunches.

(sound of boat engine starting up)

Brenda Moraska LaFrancois is headed out on Lake Michigan to investigate. She’s
part of a team that’s collecting samples from the lake bottom.

She says this is a tough mystery to unravel.

“These are really complicated systems and unfortunately they’re continuing to
change.”

As soon as scientists think they have a handle on what’s going on, some new
invader gets in and messes everything up again. So it’s really hard to know what
could be done to stop the outbreaks.

The experts say, if you go to the beach, it’s safe to swim. But you shouldn’t eat any
fish or waterfowl that seem sick.

Your local wildlife managers might tell you: don’t touch it, but get something to
bury the dead animal down in the sand, so other birds won’t feed on it and spread the
toxin.

For The Environment Report, I’m Rebecca Williams.

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Leafy, Irradiated Greens

  • The Food and Drug Administration has now approved irradiating iceberg lettuce and spinach to kill the bacteria. (Photo by Ken Hammond, courtesy of the USDA)

The government has cleared the way
to irradiate some produce. Lester Graham
reports if produce companies do use radiation,
it might reduce contamination of leafy greens:

Transcript

The government has cleared the way
to irradiate some produce. Lester Graham
reports if produce companies do use radiation,
it might reduce contamination of leafy greens:

The last few years a lot of people have gotten sick from salmonella and e.coli
contamination. The Food and Drug Administration has now approved irradiating
iceberg lettuce and spinach to kill the bacteria.

Dennis Olson is a scientist at Iowa State University. He says like irradiating meat,
people will accept this too.

“There are a lot of consumer activists groups that are opposed to the technology and
they get a lot of media attention that says consumers hate it or don’t want it. And yet, in
fact, when we’ve introduced the products – with some education – consumers are very
willing to accept it.”

Olson says the FDA should okay irradiating other produce too. It’s expensive, but it
might mean fewer costly recalls for produce companies, and means longer shelf life for
lettuce and spinach.

For The Environment Report, this is Lester Graham.

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Study: Pregnancy and Peanut Butter

  • A study found that moms who ate peanut butter or nuts every day increased the risk of asthma in their kids by 50% (Photo courtesy of the EPA)

A new study finds pregnant moms
who eat peanut butter every day might be
affecting their babies’ health. Rebecca
Williams has more:

Transcript

A new study finds pregnant moms
who eat peanut butter every day might be
affecting their babies’ health. Rebecca
Williams has more:

The Dutch government has been following a few thousand kids and their moms
for 8 years. They wanted to see if there was a link between the moms’ diets
and whether the kids would develop asthma.

It turns out that moms who ate peanut butter or nuts every day increased the
risk of asthma in their kids by 50%.

Dr. John Heffner is a former president of the American Thoracic Society. He
says these results are interesting – but that doesn’t mean there’s a definite link
between eating nuts and asthma.

“I think that this is a piece of information that confirms a well balanced diet of
mothers is the most important thing to do. But it doesn’t suggest that mothers
oughta take nuts out of their diet if they’re ingesting nuts now.”

Dr. Heffner says there are a lot of factors that could lead to asthma. He says
this needs more study, but in the meantime, pregnant moms should stick to
their doctor’s advice.

For The Environment Report, I’m Rebecca Williams.

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U.S. Lax on Chemicals

  • Toy makers use phthalates to make hard plastic pliable (Source: Toniht at Wikimedia Commons)

News about dangerous chemicals in toys,
cosmetics and cleaning products has a lot of
Americans spending extra money. People want to
make sure they’re choosing things that are safe
for their families. Julie Grant reports that
other countries are ahead of the US in efforts
to improve the safety of all products:

Transcript

News about dangerous chemicals in toys,
cosmetics and cleaning products has a lot of
Americans spending extra money. People want to
make sure they’re choosing things that are safe
for their families. Julie Grant reports that
other countries are ahead of the US in efforts
to improve the safety of all products:

So you might expect that the government has tested those
chemicals to make sure they’re safe. But you’d be wrong.

Daryl Ditz is senior policy advisor at the Center for
International Environmental Law.

He says the US Environmental Protection Agency has never
assessed the hazards of most chemicals used in every day
products.

“That means the EPA doesn’t know, and you and I don’t know,
which materials on the shelves are more dangerous and
which are less.”

Ditz says only a few hundred chemicals have been
thoroughly tested by the U.S. government, but there are
80,000 chemicals used in products on the market.

In the U.S., the EPA has to prove a chemical is harmful to
keep it off the market.

(sound of toy store)

Dorothy Bryan is shopping at this upscale toy store in Northeast Ohio.

She’s got three grandkids. She’s looking at an
organic cotton bunny, colorful wooden blocks, and of course
Thomas the Tank Engine. She
pays more for toys at this store than she would at the big box
retailer. But Bryan says they’re worth it.

“They’re not toxic. That’s the big part. They’re not the
plastic toxic things.
I purchase usually the wooden toys. The little one puts
everything in his mouth.”

But most kids’ toys are made of plastic. And lots of plastics are made with phthalates. It makes them pliable.

But phthalates are endocrine disruptors. They’re gender-bender chemicals that make girls develop earlier and reduce testosterone levels in boys.

That’s why
California has banned the use some phthalates in toys. So
have Japan and the European Union.

But Daryl Ditz, chemical expert at Center for International
Environmental Law, says regulators in the U.S. don’t have
much power to ban phthalates or other chemicals.
Chemicals here are innocent until proven guilty.

“That is, companies can sell virtually anything in a product or in a barrel unless it’s been proven
to be dangerous.”

But other countries are starting to take the opposite
approach. Ditz says the European Union is rolling out a new
set of laws that make chemicals guilty until proven
innocent.

“They’re putting the responsibility squarely on the shoulders
of the chemical makers. As opposed to having the
environmental authorities look for a needle in the haystack,
they’re saying, ‘this should be the responsibility of the
companies who make these materials.’”

Under the EU law, manufacturers will have to study and
report the risks posed by each chemical: whether they
cause cancer, birth defects, or environmental problems.

The Bush administration and chemical manufacturers tried to
block the European law. But they couldn’t.

Ditz says leaders in the
chemical makers’ trade group are now running around like
their hair is on fire. They’re worried – the costs to comply
could be in the tens of millions of dollars for some
companies that export chemicals to Europe.

But many individual companies have already started to
comply with the law.

Walter van het Hoff is spokesperson for Dow Chemical in
Europe. He says cataloging Dow’s 7000 chemicals is a
huge effort, but they don’t have a choice.

“You need to comply; otherwise you cannot sell them
anymore in the European Union.”

There are a half billion consumers in the EU and Dow wants to keep them. Dow and other
manufacturers might have to reformulate – or even abandon
some chemicals if the EU decides they’re unsafe.

While the U.S. is not considering a comprehensive chemical
review like Europe’s new laws, about 30 states are
considering new regulations on chemicals in toys. The Toy
Industry Association doesn’t want a patchwork of laws, so
it’s called for national toy safety standards.

For The Environment Report, I’m Julie Grant.

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Super Mosquito to Fight Malaria?

  • (Photo courtesy of the US Geological Survey)

Researchers have created a genetically
modified mosquito. Rebecca Williams reports the
scientists hope the mosquito will help save lives:

Transcript

Researchers have created a genetically
modified mosquito. Rebecca Williams reports the
scientists hope the mosquito will help save lives:

Malaria kills more than one million people every year. The disease is
spread by mosquitoes.

Marcelo Jacobs-Lorena is a researcher at Johns Hopkins Malaria
Research Institute. He’s part of a team that has bred a genetically
modified mosquito. It can’t get infected by the malaria parasite.

“If we go to a region where malaria is prevalent and we are able to
substitute the local mosquito population by the modified mosquito that
cannot carry the parasite, then the net effect will be interruption of
transmission.”

Jacobs-Lorena says they’re confident the super mosquito is safe to
release into the wild.

But he says they’ll have to convince a lot of people that it’s okay to let it
out of the lab.

For The Environment Report, I’m Rebecca Williams.

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West Nile Virus Here to Stay

  • USGS Wildlife Veterinarian testing an American crow for previous exposure to the West Nile Virus (Photo courtesy of US Geological Survey)

We’re heading into West Nile virus season.
Rebecca Williams reports experts say it’s now a
seasonal epidemic:

Transcript

We’re heading into West Nile virus season.
Rebecca Williams reports experts say it’s now a
seasonal epidemic:

West Nile virus is at its peak between mid-July and mid-September.

You can get infected from a single mosquito bite.

Most people who get infected won’t get a serious case of it. But people
over 50 have a higher risk of getting really sick. The virus can cause
high fever, paralysis and even death.

Dr. Lyle Petersen is with the Centers for Disease Control. He says West
Nile Virus is here to stay. And he says even if your area hasn’t had an
outbreak recently, that doesn’t mean it won’t happen.

“We really can’t predict exactly when and where these outbreaks are
going to occur so everybody needs to take precautions.”

He says you should use insect repellants, repair window screens, and
drain standing water around your house.

For The Environment Report I’m Rebecca Williams.

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States Go Farther to Reduce Mercury

  • Some of the fish caught in the Great Lakes are unsafe to eat due to mercury (Photo courtesy of the US Fish and Wildlife Service)

The government warns people not to eat too
much Great Lakes fish. That’s because some fish are
contaminated with mercury – a toxic chemical. Some
of that mercury comes from coal-burning power plants.
Erin Toner reports more states are beginning to make
power companies cut down mercury pollution:

Transcript

The government warns people not to eat too
much Great Lakes fish. That’s because some fish are
contaminated with mercury – a toxic chemical. Some
of that mercury comes from coal-burning power plants.
Erin Toner reports more states are beginning to make
power companies cut down mercury pollution:

The courts have ruled the federal government has not done enough to reduce mercury
pollution. Now, more states are adopting their own rules.

Illinois and Minnesota require power plants to cut mercury emissions 90% by 2015.
Wisconsin is following suit, but its plan gives utilities more time to get to 90% if they cut
other pollutants at the same time.

Keith Reopelle is with the group, Clean Wisconsin.
He’s happy with the new rule, but says it could be stronger.

“It does require the largest power plants to reach the 90% reduction on average over their
fleet, that’s not really the same as requiring every plant to get a 90% reduction.”

Wisconsin’s largest utility says complying with the new rule will be a ‘technological
challenge’. Power bills are expected to go up between 5 and 12 dollars a year to pay to
reduce mercury pollution.

For The Environment Report, I’m Erin Toner.

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Fish Disease Spreads to New Waters

  • Signs of VHS, from the Michigan DNR (Photo courtesy of the US Fish and Wildlife Service)

Despite efforts to stop it, there’s a new
indication a nasty fish virus is spreading. Christina
Shockley has the latest:

Transcript

Despite efforts to stop it, there’s a new
indication a nasty fish virus is spreading. Christina
Shockley has the latest:

The name even sounds scary: viral hemorrhagic septicemia. It causes fish to bleed to
death.

VHS has been in the Great Lakes for at least three years. Officials have been trying
to confine it to the Great Lakes basin, but now it’s spread into central Ohio.

Elmer Heyob is with the Ohio Department of Natural Resources.

He says the worst-case scenario is that VHS could get into a hatchery that stocks fish
for lakes and streams, and that cloud hurt the region’s economy.

“First the hatcheries, then the fishery, then the people that support the fishery, the
boating industry, it just goes on and on.”

Heyob says to stop VHS from spreading, you shouldn’t move fish from one lake to
another, and you should clean boating and fishing equipment before you move to a
different lake.

Researchers believe eventually fish build up immunity to the disease.

VHS does not pose a threat to people.

For The Environment Report, I’m Christina Shockley.

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Keeping Your Lawn From Bugging You

  • There's a movement to stop using pesticides and sprays on your lawn (Photo by Ilja Wanka)

A lot of us have a love-hate relationship
with our lawns. We love them when they’re lush.
We hate them when they’re full of dandelions and
dead patches. It’s easy to have someone come out
and spray pesticides to take care of weeds and bugs.
But some people say it’s not necessary and could
do more harm than good. Rebecca Williams reports:

Transcript

A lot of us have a love-hate relationship
with our lawns. We love them when they’re lush.
We hate them when they’re full of dandelions and
dead patches. It’s easy to have someone come out
and spray pesticides to take care of weeds and bugs.
But some people say it’s not necessary and could
do more harm than good. Rebecca Williams reports:

So, you might be using pesticides on your lawn right now. And of
course, the pesticide industry says that’s okay.

The industry says the chemicals are safe to use on the lawn if you use
them correctly.

Alan James is president of Responsible Industry for a Sound
Environment, or RISE. It’s a trade group for pesticide companies.

“If individuals or professional applicators read the labels and follow
labels, the likelihood of misuse of pesticides is virtually zero because the
labels provide all the information a consumer or professional needs to
apply products both efficiently and safely.”

But the problem is, not everybody reads the label.

Alan James says if you’re hiring someone to spray your lawn you should
make sure they’re certified and insured. You should also take your kids’
and pet’s toys off the lawn before they spray.

But a lot of people say there’s no point in using chemicals just to make
your lawn look good.

Jay Feldman is with the group Beyond Pesticides. He says of the 30
most common lawn pesticides, most of them are suspected by the
Environmental Protection Agency to cause cancer, birth defects or other health problems.

“There’s a range of adverse effects that are indicated as a part of the
pesticide registration program at EPA. EPA knows this information.
Why not remove pesticides from the equation, especially in light of the
fact that they’re not really necessary?”

There’s a movement to stop using pesticides in North America. Both
Ontario and Quebec have banned the sale and cosmetic use of
pesticides. And Home Depot in Canada recently said it will stop selling
traditional pesticides all together by the end of the year.

So if you’re not going to use pesticides, what do you do?

That’s a question Kevin Frank gets a lot. He’s an extension agent at
Michigan State University and an expert on lawns.

“I love to mow my lawn on the weekends because nobody can call me on
the phone or email me with questions.”

He’s been showing me green, healthy test plots of grass and some that
look sad and neglected. The scientists here have been working to find
ways to have good-looking lawns without a lot of chemicals.

Back in his office, Kevin Frank says he tells people they shouldn’t be
afraid to experiment.

“Do you have it in you to let it go for one season and see what happens?
And it could be ugly, so you’ve got to be prepared for that!”

He says a healthy, dense lawn is actually really good at fighting off
weeds and pests all on its own. So, how do you get a healthy, dense lawn
without a lot of chemicals? Frank says it might take a couple years to get
there. And it means going against conventional lawn advice.

“We’ve done a great deal of research here at Michigan State that runs
contrary to what I call ‘turf dogma’. You know: water deeply and
infrequently – and we’ve shown if you do it on a more frequent basis you
end up with a healthier plan overall.”

He recommends watering lightly – just 10 minutes – every day instead
of soaking the lawn once a week. Frank says it’s also good to fertilize
twice a year, use a mulch mower, and mow high instead of giving the
grass a buzz cut.

He says that could make your lawn so healthy, it might mean you won’t
need to spray or hire someone to spray your lawn.

He says the biggest adjustment in reducing pesticide use is managing
your expectations, and deciding how many weeds and bugs you can live
with.

For The Environment Report, I’m Rebecca Williams.

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Cure for Frog Killing Fungus?

  • 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.

For The Environment Report I’m Rebecca Williams.

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