Tag: plant

The Debate Over a Corn-Based Hydrogen Economy

  • Researchers are looking at ethanol from corn as an environmentally-friendly way to power fuel cells. However, some studies show corn-based ethanol takes more energy to produce than the fuel provides. (Photo by Lester Graham)

Researchers are looking at ways to use corn-based ethanol as a way to power hydrogen fuel cells. It would appear to be an environmentally friendly way to get into the hydrogen fuel economy. However, ethanol might not be as environmentally friendly as its proponents claim. Backed by the farm lobby and ag industries such as Archer Daniels Midland, ethanol has plenty of political support. But some researchers say corn-based ethanol is a boondoggle. The Great Lakes Radio Consortium’s Mary Stucky reports:

Transcript

Researchers are looking at ways to use corn-based ethanol as a way to power hydrogen fuel cells.
It would appear to be an environmentally friendly way to get into the hydrogen fuel economy.
However, ethanol might not be as environmentally friendly as its proponents claim. Back by the
farm lobby and ag industry such as Archer Daniels Midland, ethanol has plenty of political
support. But some researchers say corn-based ethanol is a boondoggle. The Great Lakes Radio
Consortium’s Mary Stucky reports…


This reactor is in a laboratory at the University of Minnesota ticking as it converts ethanol into
hydrogen. Researchers here envision thousands of these inexpensive reactors in communities
across America using ethanol to create hydrogen, which would then be used in fuel cells to
generate electricity.


Lanny Schmidt, a Professor of Chemical Engineering, directs the team that created the reactor.


“We’re not claiming our process is the cure-all for the energy crisis or anything like that. But it’s
a potential step along the way. It makes a suggestion of a possible way to go.”


Hydrogen is usually extracted from fossil fuels in dirtier and more costly refineries.


Schmidt says it’s much better to make hydrogen from ethanol.


“It right now looks like probably the most promising liquid non-toxic energy carrier we can think
of if you want renewable fuels.”


Not so fast, says David Pimentel, an agricultural scientist at Cornell University. For years,
Pimentel has warned about what he calls the cost and efficiency and boondoggle of ethanol.
Pimentel says ethanol is a losing proposition.


“It takes 30-percent more energy, including oil and natural gas, primary those two resources to
produce ethanol. That means importing both oil and natural gas because we do not have a
sufficient amount of either one.”


Pimentel says most research on ethanol fails to account for all the energy needed to make the fuel,
such as energy used to make the tractors and irrigate crops. Adding insult to injury, says
Pimentel, ethanol relies on huge government subsidies going to farmers and agri-business.


“If ethanol is such a great fuel source, why are we subsidizing it with 2-billion dollars annually?
There’s big money, as you well know, and there’s politics involved. And the big money is leaking
some of that 2-billion dollars in subsidies to the politicians and good science, sound science,
cannot compete with big money and politics.”


Pimentel also points to environmental damage of growing corn – soil erosion, water pollution
from nitrogen fertilizer and air pollution associated with facilities that make ethanol. But
Pimentel has his detractors.


David Morris runs the Institute for Local Self Reliance in Minneapolis. Morris is not a scientist,
but he commissioned a study on ethanol. He says Pimentel relies on out-of-date figures and fails
to account for the fact that ethanol production is getting more efficient.


Morris’ findings – a gallon of ethanol contains more than twice the energy needed to produce it.
As for subsidies…


“There’s no doubt that if we did not provide a subsidy for ethanol it would not be competitive
with gasoline. But what we need to understand is that we also subsidize gasoline, and if you took
the percentage of the Pentagon budget, which is spent directly on maintaining access to Middle-
Eastern oil, and impose that at the pump, it would add 25- to 50-cents a gallon. At that point,
ethanol is competitive, under the assumption that you will not need a large military budget to
protect our access to Iowa corn.”


But more efficient than making ethanol from corn might be grass, or even weeds. David Morris
says that’s because you don’t have fertilize or irrigate those kinds of plants, the way you do corn.


“So if we’re talking about ethanol as a primary fuel to truly displace gasoline, we have to talk
about a more abundant feedstock. So instead of the corn kernel, it become the corn stock, or it
becomes fast-growing grasses, or it becomes trees, or sawdust or organic garbage. And then
you’re really talking about a carbohydrate economy.”


Pimentel scoffs at that idea.


“You’ve got the grind that material up, and then to release the sugars, you’ve got to use an acid,
and the yield is not as high. In fact, it would be 60-percent more energy using wood or grass
materials.”


While scientists and policy people debate whether ethanol is efficient or not, Lanny Schmidt and
his team soldier on in the lab undeterred in their efforts to use ethanol for fuel. Schmidt
understands some of Pimentels’s concerns, but he thinks scientists will find an answer, so ethanol
can be used efficiency enough to help power the new hydrogen economy.


For the Great Lakes Radio Consortium, I’m Mary Stucky in Minneapolis, Minnesota.

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Ginseng Thieves Strike the Midwest

  • Wild ginseng is protected in the Great Lakes states, but poachers illegally dig up the herb because of high prices.

Conservation officers are starting to notice a demand for a threatened native plant. The Great Lakes Radio Consortium’s Kaomi Goetz reports on how wild ginseng might be smuggled out of the nation:

Transcript

Conservation officers are starting to notice a demand for a threatened native plant. The Great
Lakes Radio Consortium’s Kaomi Goetz reports on how wild ginseng might be smuggled out of
the nation:


While other states have been hit by ginseng smugglers, this is something new in Michigan,
something they’ve never paid much attention to… until now.


Sergeant Ron Kimmerley and Officer Andy Bauer of the State Department of Natural Resources
are deep into the woods.


They’re scouting around Warren Dunes State Park next to Lake Michigan.


They spot what they’re looking for.


What they’ve found are wild ginseng plants, a threatened species that’s protected under Michigan
law.


What they’re also looking for are homemade flags marking the site and signs of digging.


Officer Bauer says they first noticed the flags last summer.


“There were felt flags stuck into the ground, and the rangers had seen those and thought it was
from an orienteering class. Later, we saw the flags were laid down and there were holes where
things had been harvested.”


Until then, Bauer says ginseng poaching had gone largely unnoticed.


More than 30 arrests were made last year and the scenario was often the same: A group would
act as a family of picnickers while one or two people slipped away to dig up ginseng.


Bauer says it was clear that most knew they were breaking the law.


“Some had plastic bags. Others, it was concealed much like narcotics would be, concealed under
their clothes. One woman, we found in the woman’s purse where the bottom was removed, and
there were at least 20 roots.”


Another similarity in the cases was that all those caught were of Asian descent.


Though separate instances, many of them had similar Chicago street addresses.


One man even came from Korea. He came on a 10-day tourist visa, apparently just to harvest
ginseng.


The officers suspect most of the wild ginseng was being taken back to Chicago to sell there or for
export to Asia.


Paul Hsu raises ginseng legally in Wisconsin. He agrees with the conservation officers that the
ginseng is being smuggled to Chicago or out of the country.


“They could have dug it and consumed there. But I don’t think that’s their intention. They dig it,
take it back to Chicago, sell it. They know the value of it.”


Hsu says ginseng roots have been valued in Asian culture for almost 3,000 years for its medicinal
properties.


“The Chinese believe it’s a cure-all…in the old-time, we don’t have antibiotics. It’s more like a
shot-gun approach. Can relieve stress, give you more stamina. To enhance the function of your
body, immune system…whatever.


Wild ginseng is considered more potent than cultivated ginseng, the kind Hsu grows.


And it’s lucrative. A pound a wild ginseng can fetch upwards of $350.


The fines in most Midwest states are fairly high. The penalties in Michigan range up to $5,000
for a first offense and could include jail time.


The poachers are aware of this and usually carry wads of cash. Officers say they suspect it’s
considered the price of doing business.


They’re taking the risk because ginseng is becoming increasingly scarce in Asia.
Environmentalists say that’s what’s behind the high demand and illegal harvesting of American
wild ginseng.


“It’s where there’s greater concentrations that have not yet been harvested.”


Dave Dempsey is a policy advisor at the Michigan Environmental Council.


“It’s more economical for harvesters to exploit here in Michigan and around the Great Lakes.”


Poaching has been going on in southern states for many years because of legendary stock around
the Appalachians.


More recently, poachers are targeting the Midwest because of rich soil. And ginseng has become
so rare everywhere else.


At Warren Dunes State Park, Sergeant Ron Kimmerley is organizing group patrols to try to catch
poachers.


There’s even plans to place plain-clothes officers as picnickers.


But he admits, it might not be enough.


“We’ve got a lot of poachers here, but what’s happening where we can’t be?”


So far, no one has been caught in Michigan this year. But Sergeant Kimmerley says the ginseng
harvest season is just beginning.


For the Great Lakes Radio Consortium, I’m Kaomi Goetz.

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GINSENG THIEVES STRIKE THE MIDWEST (Short Version)

  • Wild ginseng is protected in the Great Lakes states, but poachers illegally dig up the herb because of high prices.

Wild ginseng has been poached in North America for years. American ginseng is considered among Asian herbalists to be among the world’s most potent. But a dwindling supply in the more common hunting areas and a global, increased demand for herbal medicine is putting many states in the region at new risk for poaching. The Great Lakes Radio Consortium’s Kaomi Goetz reports from Michigan:

Transcript

Wild ginseng has been poached in North America for years. American ginseng is considered
among Asian herbalists to be among the world’s most potent. But a dwindling supply in the more
common hunting areas and a global, increased demand for herbal medicine is putting many states
in the Great Lakes region at new risk for poaching. The Great Lakes Radio Consortium’s Kaomi
Goetz reports from Michigan:


Wild ginseng is protected by some states as a threatened native species.


No one knows just how much ginseng is growing wild in the Great Lakes region. Yet incidents
last summer have law enforcement officers on the alert.


More than 30 people were caught trying to smuggle ginseng out of a Michigan state park next to
Lake Michigan.


Fines can go into the thousands of dollars with even possible jail time.


Even so, Sergeant Ron Kimmerley of the Michigan Department of Natural Resources says his
state is largely defenseless.


“There’s only about 200 officers, maybe a little less than that, in the whole state of Michigan. It’s
just not enough. I mean, some counties don’t even have an officer.”


This year, conservation officers are planning other tactics to catch poachers, such as using plain-
clothes officers. Other states such as Indiana and Illinois have also been targets for ginseng
poaching in recent years.


For the Great Lakes Radio Consortium, I’m Kaomi Goetz.

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Trade With Asia to Ship in New Invasives?

  • The Asian longhorned beetle, native to China, is a serious threat to hardwood trees in the U.S. So far, populations of the beetle have been confined to Chicago and New York. Foresters are concerned that more non-native species will be introduced through expanded global trade. Photo courtesy of USDA-APHIS.

Forests in the Midwest may be under siege from exotic species more often in the future… partly because of international trade. The Great Lakes Radio Consortium’s Rebecca Williams explains:

Transcript

Forests in the Midwest may be under siege from exotic species more often in the future… partly because of international trade. The Great Lakes Radio Consortium’s Rebecca Williams reports:

The Asian longhorned beetle is native to China.
The beetle caught a ride to the U.S. in the wooden packing material of
imported goods. So far, the beetle has been found in New York and
Chicago. 


Once a tree is infested with beetles, the best way to stop the beetles from spreading is to destroy the tree.

A National Academy of Sciences study predicts that threats to native species will increase as trade opens up between the U.S. and China. The authors say that China may become a new “donor region” for species that could become invasive.

Entomologist Deborah McCullough is an author of the study.

“You can kind of visualize this whole complex of insects and weeds and plant pathogens in Asia that haven’t had a pathway, they haven’t had a route to be brought to the country yet… and we really don’t know what all could end up coming in.”

Dr. McCullough says because China’s range of climates and plant life are similar to that of the U.S., many species that make it over here have a chance to become established.

For the Great Lakes Radio Consortium, I’m Rebecca Williams.

CONSTRUCTING NATURAL HABITATS (Part 2)

  • This grizzly at the St Louis Zoo is displayed in an exhibit that mimics its natural habitat. A whole industry has emerged to manufacture these exhibits.

At your local zoo – if you can suspend disbelief for a moment – you might find yourself in the middle of a tropical rainforest. Or a dusty African plain, watching the animals in their natural habitat. Of course, those wild settings are merely a façade. Clever construction techniques covering up concrete cages. In the second of a two-part series, the Great Lakes Radio Consortium’s Lester Graham reports… the thought and planning behind the displays can be nearly as intricate as nature itself:

Regional Winemakers Worry About Disease

Some winemakers are battling a disease called "black goo." It’s caused
by a fungus that leaves infected grape vines stunted and weak. As the
Great Lakes Radio Consortium’s Wendy Nelson reports, no one’s sure
where the disease is coming from, or where it might turn up:

Transcript

Some winemakers are battling a disease called “black goo.” It’s caused by a fungus that leaves infected grape vines stunted and weak. As teh Great Lakes Radio Consortium’s Wendy Nelson reports, no one’s sure where the disease is coming from, or where it might turn up:


Black goo has claimed an estimated nine-thousand acres of vines in California. That’s only about one percent of the state’s vineyards. But so far, there’s no cure; the only thing growers can do is rip up the vines and replant.


Ironically, some think the ever-growing popularity of California wines may be contributing to the problem.


“In other years, some of the weaker vines would have been thrown away.”


Wayne Wilcox is a professor of plant pathology with Cornell University.


“One of the prevailing theories is that this disease – the fungi that are causing it – are preying on some of these weaker vines.”


Wilcox says there have been a couple of isolated reports of black goo outside of California, including one case in New York. But he says Great Lakes winemakers shouldn’t panic. Instead, Wilcox advises them to examine vines carefully and reject any that look weak.


For the Great Lakes Radio Consortium, I’m Wendy Nelson.

Creating Fragrant Flowers

When was the last time you got a bouquet of flowers that had a
fragrant smell? While there’s no shortage of beautiful looking flowers
for
sale, many have little if any scent anymore. As the Great Lakes Radio
Consortium’s Tamar Charney reports it’s a problem one scientist has
gotten a whiff of:

Transcript

When was the last time you got a bouquet of flowers that had a fragrant smell? While there’s no shortage of beautiful looking flowers for sale, many have little, if any, scent anymore. Ast he Great Lakes Radio Consortium’s Tamar Charney reports, it’s a problem one scientist has gotten a whiff of:


Flowers have lost their smell as flower growers have bred them to be big and brightly colored. Eran Pichersky is a biologist at the University of Michigan. He studies the smell of flowers. Pichersky is focusing his genetics research on whether it’s possible to bioengineer a flower’s scent.


“We actually have some collaboration with biotech companies who are trying to use some of the genes and enzymes we’ve isolated to put them back into plants so that the plant makes more scent, or even new scent that they didn’t make before.”


But it’s not florists who are interested in this work, it’s farmers. Pichersky’s research means it might be possible to alter the smell of flowers in ways that entice bees to visit crops more often, or even attract other insects to do the pollination work. That increase in pollination could mean an increase in crop yields.


For the Great Lakes Radio Consortium, I’m Tamar Charney.

New Research in Drug Development

Scientists say they might have found a more efficient way to produce drugs
and chemicals from plants. The Great Lakes Radio Consortium’s Lester Graham
reports… it might reduce the cost of developing drugs:

Toxin Eating Geraniums

Canadian scientists are applying for a patent on using geraniums to clean up
toxins. The Great Lakes Radio Consortium’s Lester Graham reports it’s
controversial because the patent would control the use of a naturally
occurring flower: