Veterans’ Benefits for Agent Orange Exposure

  • A poster from the Department of Veterans Affairs offering help and resources to veterans exposed to Agent Orange. (Photo courtesy of the Department of Veterans Affairs)

The US Department of Veterans
Affairs is offering new help to
Vietnam-era vets. The VA says
it can now assist vets who have
ailments related to Agent Orange
exposure. Mark Brush has more:

Transcript

The US Department of Veterans
Affairs is offering new help to
Vietnam-era vets. The VA says
it can now assist vets who have
ailments related to Agent Orange
exposure. Mark Brush has more:

During the Vietnam War, the herbicide known as Agent Orange was sprayed over jungles and forests. It was used to strip the leaves from the trees and expose enemy soldiers.

Some US soldiers who were exposed to the herbicide have long complained about health problems.

Now, the Department of Veterans Affairs says it will help these veterans with disability benefits.

Exposure to Agent Orange has been tied to health problems like parkinson’s disease, cancer, and heart problems.

Allan Oates is with the US Military Veterans with Parkinson’s. He served in Vietnam. And was exposed to Agent Orange. He says his group was thrilled by the VA’s decision.

“It was just an exhilarating feeling to have these people knowing that they were going to get the help that they deserved.”

Oates says many Vietnam era veterans don’t know yet that help is available to them.

The VA estimates that 2.6 million military personnel were potentially exposed to sprayed Agent Orange.

For The Environment Report, I’m Mark Brush.

Related Links

Diversity in Urban Forestry

  • Forest researchers say cities need to plant different kinds of trees. Many cities plant only a handful of species. (Photo courtesy of the US Forest Service)

Urban forest researchers say cities
need different kinds of trees. Having
too many of the same kind of trees
encourages pests. Lester Graham reports:

Transcript

Urban forest researchers say cities
need different kinds of trees. Having
too many of the same kind of trees
encourages pests. Lester Graham reports:

Pests have already wiped out native trees such as chestnuts, elms and now ash.

James Kielbaso is a forester with Michigan State University. He says native trees are great but, one of his students has found some cities are too reliant on them.

“An urban tree population should not consist of any more than ten or fifteen percent of any one species. He’s finding the trees that are most over-used tend to be our native trees.”

In some cases, maples make up 30% of a city’s trees. That means if a disease or a pest hits maples, a city could lose a third of its urban forest.

Kielbaso says people should plant tree species not already in the neighborhood and a few hardy foreign species could help diversify a city forest.

For The Environment Report, I’m Lester Graham.

Related Links

Citizen Scientists Track Climate Change

  • Reporter Sadie Babits is tracking the blooming of a lilac tree, as part of a "citizen scientist" project that will document climate change. (Photo courtesy of Wikimedia Commons)

Scientists are asking citizens to pay attention to plants this spring. They want you to report everything from leaf buds to blossoms. Scientists want those observations from right in your backyard to better understand how climate change is affecting plants and trees. Sadie Babits liked the idea and signed up:

Transcript

Scientists are asking citizens to pay attention to plants this spring. They want you to report everything from leaf buds to blossoms. Scientists want those observations from right in your backyard to better understand how climate change is affecting plants and trees. Sadie Babits liked the idea and signed up:

You know, I found it really isn’t hard to be a citizen scientist.

I’m on the website for Project Budburst. It’s a nationwide effort to get people out into their backyards to track spring flowers. All I have to do is to pick a plant or tree to keep an eye on and then report my findings.

I’m thinking I’ll check out the lilac trees in my neighborhood here in Portland. But before I head out, I need some advice.

So I called Sandra Henderson. She’s busy these days directing Project Budburst at the University Corporation of Atmospheric Research.

“Hey Sadie.”

I reach Henderson at her office in Boulder, Colorado.

What advice do you have for me, a first citizen scientists observing phenology?

“The ideal thing to do is get a sense of when lilacs in your case in Portland, Oregon are expected to have different pheno events.”

Good thing I looked up phenology before calling Henderson. Basically it means nature’s calendar – the timing of when cherry blossoms bloom or a robin builds a nest.

And these life cycles of plants and animals are sensitive to changes in climate.

“Plants provide a wonderful context for understanding changes to the environment and they certainly respond to changes in temperature and precipitation, things that climate scientists are very interested in.”

Scientists can’t be in everyone’s backyard. That’s where volunteers come in. Last year some five thousand people across the country reported their observations to Project Budburst. That information now is the foundation for an online database that includes everything from dandelions to ponderosa pines.

So after walking through our neighborhood and seeing a lot of trees that have already flowered, I’ve decided that these lilac trees outside of our house are perfect for watching because they haven’t flowered yet and there are leaf buds all over the branches. And here’s a branch and the leaf buds are huge and they are just starting to unfurl.

Now that I’ve found my lilac tree to watch, I can report today’s findings.

Really that’s it. Scientists are finding out a lot of interesting things. For example, forsythia in Chicago are blooming a week earlier. These simple observations will eventually create a snapshot of how climate change is affecting plants across the U.S.

For The Environment Report, I’m Sadie Babits.

Related Links

Using Trees as Cleaning Tools

  • Argonne researchers and technicians are tracking how well poplar trees are containing and removing toxic solvents (such as Trichloroethane, 1,1-Dichloroethane, and 1,1,1-Trichloroethane, Trichloroethylene) from underground water. Pictured here are Cristina Negri, Lawrence Moss, John Quinn, Rob Piorkowski. (Photo by Shawn Allee)

When you think of cleaning up toxic waste, you might think of technicians digging huge holes
and carting off contaminated soil. It’s expensive, and they’re often just putting the soil and the
problem, somewhere else – say, to a hazardous waste landfill. Shawn Allee met researchers
who hope trees can clean some toxic waste, and leave the landscape in place:

Transcript

When you think of cleaning up toxic waste, you might think of technicians digging huge holes
and carting off contaminated soil. It’s expensive, and they’re often just putting the soil and the
problem, somewhere else – say, to a hazardous waste landfill. Shawn Allee met researchers
who hope trees can clean some toxic waste, and leave the landscape in place:

Argonne National Laboratory is a Big Science kinda place.

It’s a federal lab southwest of Chicago where they study particle physics, nuclear energy, and
advanced environmental clean-up.

The irony is, the place has been around so long, it’s now cleaning up its own environmental
messes.

In fact, it’s Larry Moss’s job. He takes me to a toxic waste site where trees help clean the soil.

More on those trees in a sec – first, here’s why Larry Moss needs them.

“This site was a very busy site back in the 50s and 60s. We had a large manufacturing process
for reactor components – did a lot of testing of reactor assemblies and different fuel mixtures. And to
do that you had to clean all that equipment and a lot of that solvent came down here.
There was a unit that was called a French drain, which basically was a trench filled with gravel. They would come down here and dump chemicals into this trench, and their theory was it would dissolve into the ground. They
thought it would just go away.”

Those solvents did not go away. They leeched into underground water.

The solvents potentially cause cancer and other problems, so the government said Argonne
needed to do something about the mess.

Researcher Christina Negri lays out what the options were.

“Put a parking lot on top of the pollution area
and basically leave it there forever. The other extreme, it would have been: dig out the soil, take it
somewhere – where you haven’t changed much. You’ve moved it from here to a landfill. That’s not the solution as
well.”

Those options – covering it up or carting it off – are also expensive.

So, Argonne researchers figured they’d try something new.

Negri says they hope to eliminate pollution on site – with the help of poplar trees.

Negri: “We’re taking advantage of a trait that these trees have to
go about finding water.”

Allee: “Let me get a closer look at a tree, here.”

Negri: “What you have to picture in your mind – See the height of the tree?”

Allee: “I’m looking at one that’s as tall as a three story walk-up building I live in.”

Negri: “You have to flip it 180 degrees and imagine the roots are going down that deep.”

Negri says they coaxed the roots into going straight down instead of spreading out. It seems to
work; the poplar trees are sucking water out of the ground and taking up solvent.

“Part of it is degraded within the plant. Part of it goes out into the air, which sounds like an
ominous thing to say, right? But if you do your calculations right, there’s much less risk when
these compounds are in the air than there is when they’re down 30 feet below.”

Negri’s team hopes the poplar trees will be more sustainable and cheaper than alternatives, but
they’re likely to be slower.

After all, it took years for the trees to grow. That’s fine for Argonne, because no one’s at risk – but that’s
not the case everywhere.

“Arguably, this is not the remedy you would adopt if you had, like, a tank spill or something that
you really need to go in right away, clean up and be done very quickly. It’s not a remedy if there’s
anybody’s at risk.”

This isn’t the only attempt to use plants to clean up toxic waste. The science behind it is called
‘phytoremediation.’

In other examples, scientists tried alpine pennycress to clean up zinc, and pigweed to suck up
radioactive cesium.

Negri says the trick is to use the right plant for the right toxin and know whether the plants stays
toxic, too.

Still, she says, toxic waste is such a big problem, it’s good to have lots of tools in your clean-up
toolbox.

For The Environment Report, I’m Shawn Allee.

Related Links

Climate Change and Wildfires

  • Jennifer Pierce and David Wilkins stand in front of a ponderosa pine forest just outside the city of Boise. They hope to study the relationship between fire and climate here and recreate a snapshot of ancient climate. They are both teach at Boise State University's Geosciences Department. (Photo by Sadie Babits)

Twenty years ago this year, the
country watched its oldest national park
go up in flames. Looking back, scientists
believe the 1988 fires of Yellowstone
National Park were the signal fire of
climate change. Researchers have been
working ever since to understand this
relationship between climate and wildfire.
Sadie Babits reports on two scientists
searching for clues to ancient climates,
using trees as their guide:

Transcript

Twenty years ago this year, the
country watched its oldest national park
go up in flames. Looking back, scientists
believe the 1988 fires of Yellowstone
National Park were the signal fire of
climate change. Researchers have been
working ever since to understand this
relationship between climate and wildfire.
Sadie Babits reports on two scientists
searching for clues to ancient climates,
using trees as their guide:

Jennifer Pierce wears work boots as she plows down a steep slope in a
ponderosa pine forest.

(sound of walking, twigs breaking)

Her blonde hair is tucked up under her Boise State bronco cap, but it keeps
sneaking out. She has to keep brushing it back under. She and her
colleague David Wilkins are professors who work for Boise State
University’s Geosciences Department. They’re in the middle of tall pines in
a forest just outside of Boise, Idaho. Suddenly she’s crashing across the
brambles and heads for this tree.

“Oh that’s a great one! Wow! Sweet!”

She drops to her knees and shows me how this tree has been scarred by
fire.

“You see this little V shaped cat face here at the bottom of the tree that’s
blackened? So during a fire when the bark of the tree gets damaged that
preserves a record of the fire as a scar on the tree.”

Pierce says since the tree has annual growth rings, she can tell when the
tree got burned.

It’s one way Pierce and Wilkins reconstruct the fire history of this forest.
It’s a key to understanding how climate has affected forest fires in the past.

“I think as we move into a likely warmer and drier future, it’s going to be
increasingly important to understand the relationship between climate and
fire.”

She says climate is the primary control for wildfires. As the West warms,
there’s less control. Recently, that’s meant a lot more wildfires.

(popping sound) “There you go!” (sound of a drill bit going through the tree
with sound of birds and forest)

David Wilkins is twisting an auger into the tree.

“It’s a good upper body workout!” (laughs)

It’s a way to take a sample of the rings of this tree. Within a half-minute,
Wilkins’ auger is stuck. The tree is rotten inside. An eight-inch core is all he
gets.

(sound of drill bit coming out of the tree)

Jennifer Pierce takes a look at this sample Wilkins twisted out. The rings –
some light, some dark – reveal just how the tree has responded to moisture
and temperature.

“If you have a tree that kind of is at the edge of its comfort zone so to
speak, it will be more of a sensitive recorder of those environmental
stresses. See this one looks pretty good.”

Tree rings aren’t the only clue these scientists use to reconstruct historic
climates.

(scraping sound)

“I didn’t bring my big shovel. I kind of feel naked without it.”

Pierce scrapes away dirt and she finds bits of charcoal. She can sometimes
use charcoal for radio carbon dating. But these won’t do.

“But, um, I wouldn’t use them for dating because you want to make sure
that the charcoal is stratographicly in place and that you haven’t had
critters burrowing and mixing things up.”

Charcoal can be dated much further back than the tree rings. It helps
Pierce and Wilkins understand what happened here thousands of years
ago. With samples from other scientists, they’ll get a snapshot of ancient
climate and how it affects wildfire.

And possibly determine what climate change will mean for forests in the
future.

For The Environment Report, I’m Sadie Babits.

Related Links

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.

Related Links

Outdoor Lab Forecasts Global Warming Effects

  • Mark Kubiske checks the valve that controls the flow of greenhouse gases to a stand of sugar maples, birch and aspen. (Photo by Jennifer Simonson)

Scientists from around the world are studying how higher levels of carbon dioxide will affect forests 100 years from now. They’re doing that by pumping higher levels of CO2 and ozone into stands of trees. The Great Lakes Radio Consortium’s Mike Simonson visited the experimental forests and has this story:

Transcript

Scientists from around the world are studying how higher levels of carbon dioxide will affect forests 100 years from now. They’re doing that by pumping higher levels of CO2 and ozone into stands of trees. The Great Lakes Radio Consortium’s Mike Simonson visited the experimental forests and has this story:


(sound of “quiet area”)


The north woods of the Great Lakes states are stands of millions of acres of pine, maple, birch, and aspen forests. It’s a perfect place to try to figure out how trees will react to the higher levels of ozone and carbon dioxide scientists expect in the future.


(sound of beeping fence gate)


The first thing you notice at Aspen Free Air Carbon Dioxide Enrichment Project – Aspen FACE for short – is two huge tanks inside the fenced in enclosure. Each one is bigger than an 18-wheel tanker truck. They’re full of carbon dioxide… CO2. So much CO2 is used in this experiment, the tanks are filled twice a day.


(sound of filling tanks)


If you looked at the site from an airplane, you’d see 12 circular tree stands surrounded by 30 foot high pipes. Those pipes pour CO2 or ozone gases or both into the air surrounding birch, sugar maple, and aspen trees. The scientists know that greenhouse gases in the earth’s atmosphere have been increasing. They believe two centuries of industrial pollution has contributed to the problem. And they expect the CO2 and ozone levels to double by the end of this century. They’re raising the level of greenhouse gasses in different mixes to see what the predicted levels will do to forests.


This open air project is different than previous experiments. David Karnosky is with Michigan Tech. He’s the Project Manager for Aspen FACE. He says before these kinds of projects, they just tested trees inside places like greenhouses.


“We needed to get out of those chambers. We needed to have a more realistic, real world sort of situation where we had multiple trees. We wanted real intact forest communities. We didn’t want to have just a small number of trees inside of a chamber.”


The United States Department of Energy launched this experiment in Wisconsin’s northwoods seven years ago. Karnosky says they’re learning how the trees react to the higher CO2 levels, and that could shape the future of the world’s timber industry.


“Who will be the winners? Who will be the losers? Will aspen or birch or sugar maple? In northern Wisconsin here we’ve got probably 40 million acres of those species mixes. What’s going to happen under elevated CO2 in the next 100 years? Will these forests remain as they are?”


(sound of driving on gravel)


Driving to one of the experimental circles, we pull up to a ring of trees. Mark Kubiske is one of the two full-time on-site researchers.


“Now this particular ring is an elevated CO2 plot. CO2 is delivered through this copper pipe. It runs to that fan, there’s a large fan right on the end of that gray building.”


The scientists have found that trees in the CO2 circles grow 30 percent faster than trees without the gas.


“The trees are larger in diameter, they’re straight, they have lots of leaf area, they just look very healthy. That is just in tremendous contrast to the ozone ring. We’ll go up around the corner and look at one.”


Nearby another circle of trees is not doing nearly as well. The trees are skinny, twisted not as tall as the other sites. Higher ozone levels are hurting the trees.


At the sites where pipes emit both ozone and CO2, the tree growth seems normal – except for some stunted maple trees. The leaves of the aspen and birch take in much of the CO2, convert it to sugar which goes to its roots, eventually becoming a natural part of the soil. That suggests forests may help alleviate gases that cause global warming. The Project Director, David Karnosky says CO2 and ozone appear to cancel each other out. But he says it’s too early to draw any firm conclusions. Ultimately, he says governments will be able to look at this glimpse into the future and try to come up with emissions policies that help.


“The whole issue of the Kyoto protocol, our government not signing off on that. There’s been some relaxing of the feelings from what I’ve seen from the President’s report now that they’re beginning to realize that elevated CO2 is having an impact on global warming and could be impacting our plant communities.”


Karnosky says it’s possible that besides reducing emissions, governments might determine that planting more trees might be very helpful in reducing greenhouse gasses worldwide.


For the Great Lakes Radio Consortium, I’m Mike Simonson.

Related Links

The Foibles of Suburban Lawn Care

  • Although a well-manicured lawn offers certain benefits... not everyone thinks it's worth the effort. (Photo by Ed Herrmann)

One of the great rituals in suburban America is mowing the lawn. A manicured lawn seems to say that the house is well cared for, that it belongs to the neighborhood. Great Lakes Radio Consortium commentator Ed Herrmann wonders whether this obsession for the perfect lawn is worth the effort:

Transcript

One of the great rituals in suburban America is mowing the lawn. A
manicured lawn seems to say that the house is well cared for, that it belongs
to the neighborhood. Great Lakes Radio Consortium commentator Ed
Herrmann wonders whether this obsession with the perfect lawn is worth the
effort:


(sound of evening insects)


It’s a late summer evening and at last I can go outside and enjoy the
sounds of the neighborhood. There’s a little breeze, the air is cooler. The
chorus of insects is soothing, gentle but insistent, an ancient throbbing
resonance. Much better than during the day…


(roar of lawn machines)


Summer days in the suburbs are the time of assault, when people attack their
lawns with powerful weapons from the chemical and manufacturing
industries. Anyone who uses the words “quiet” and “suburbs” in the same
sentence has never been to a suburb, at least not in summer.


It takes a lot of noise to maintain a lawn. Besides the mower, you’ve got edgers, trimmers,
leaf blowers, weed whackers, core aerators, little tractors, big tractors, slitting
machines. I don’t know whatever happened to rakes and hand clippers. One
thing’s for sure. This quest for lawn perfection wouldn’t be possible without
the industrial revolution.


(machines stop)


So where did we get the idea that a house should be surrounded by a field of
uniform grass kept at the same height?


Well, with apologies to the Queen, I’m afraid we must blame the British. It
seems that, along with our language, our imperial ambitions and our
ambivalent morals, America also gets its notion of what a lawn should look
like from the English. Of course, the estates of the English aristocracy were
tended by a staff of gardeners. England also has a milder climate, and the
grass that looks so nice there doesn’t do as well in North America. In the
1930’s the USDA came up with a blend of imported grasses that would
tolerate our climate. Since these grasses are not native, they need help, and
that calls for fertilizers, pesticides and lots of extra water. Since normal
people can’t afford gardeners who trim by hand, that means lawn machines.
American industry to the rescue.


(mower starts up, fades under next sentence)


A quick Google tells me that today we have 40 million lawn mowers in use.
Each emits 11 times the pollution of a new car, and lawn mowers contribute
five percent of the nation’s air pollution. Plus more than 70 million pounds of
pesticides are used each year and over half of our residential water is used
for landscaping. Don’t you love those automatic sprinklers that come on in the
rain? Add to that all the time that people spend mowing and edging. Of
course the two billion dollar lawn care industry is thrilled about all this
enthusiasm, but I gotta ask, “Is it worth it?”


Call me old fashioned, but I actually prefer the looks of a meadow with mixed
wildflowers and grasses to the lawn that looks like a pool table. My own lawn
is somewhere between. It’s mowed, but it’s what you might call multicultural.


There are at least five different kinds of grass with different colors and
thicknesses, plus clover, dandelions, mushrooms, a few pinecones, and a
rabbit hole or two. There’s also some kind of nasty weed with thorns, but even
that has nice purple flowers if it gets big enough.


Clover, by the way, used to be added to grass seed because it adds nitrogen to
the soil. Now we just buy a bag of nitrogen fertilizer, so who needs clover?
And what’s wrong with
dandelions? You can eat them, some people even make wine out of them,
they have happy yellow flowers; yet to most people they indicate your yard is
out of control. So I’m down on my hands and knees pulling dandelions. I’m
not sure why, but I hope it keeps the neighbors happy.


One thing I won’t give in to, though, is the chemical spraying trucks, painted
green of course, that roll through the neighborhood.


I can only hold my breath. (sound of trucks and mowers) Try not to listen. And
wait for the evening. (evening insects)


(air conditioner starts up)


Although, with all these air conditioners, even the night’s not too quiet.


But that’s another story.


Host tag: “Ed Herrmann is an outdoor enthusiast living in the
suburbs of Detroit.”

Related Links

Fall Foliage Could Be Brilliant

Across the region, the leaves are beginning to change color. One forestry expert says it’s a slow start, but the autumn foliage could become brilliant before the leaves fall this year. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

Across the region, the leaves are beginning to change color. One forestry expert says it’s a slow
start, but the autumn foliage could become brilliant before the leaves fall this year. The Great
Lakes Radio Consortium’s Lester Graham reports:


This fall, most of the region has seen a lot of cooler, overcast days. Burt Barnes is a forestry
professor with the University of Michigan’s School of Natural Resources and Environment. He
says if we’re to see great fall color, we need some more sunshine.


“Well, so far we haven’t had the crisp, sunny, warm days and cold nights that are sometimes
characteristic of fall, which give us the best coloration.”


Barnes says the temperature differential between day and night affects the fall color. With
brighter, warmer days and cool nights, the colors become spectacular. He adds if there’s a sharp
frost, that will cut short the display, but if we get a long frost free period, the colors will continue
to intensify.


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