Hogweed sap can make you more susceptible to sunburn.
(Photo courtesy of the DNR)
A fast-growing invasive plant is spreading in the Great Lakes region. Officials are especially worried about this plant because it can cause your skin to burn. The Great Lakes Radio Consortium’s Bill Cohen explains:
Transcript
A fast-growing invasive plant is spreading throughout Michigan and other parts of the region. Officials are especially worried about this plant because it can cause your skin to burn.
The Great Lakes Radio Consortium’s Bill Cohen explains:
Hogweed is so unusual looking, it stands out. It can grow twelve feet high with big white umbrella shaped flowers, leaves as large as five feet across, and white hairs on the stems.
Its unique look has prompted members of garden clubs to swap samples and spread the plant around, but that’s a problem because if you get hogweed sap on you, it can neutralize yours skin’s protection against the sun.
The result: blisters, just like a second-degree burn. Lee Ann Mizer speaks for the Ohio Agriculture
Department.
“I guess the closest thing for people to understand in comparison is that of poison ivy, and this is something that’s a lot more dangerous than poison ivy.”
Federal and state agriculture officials advise people who spot hogweed in forests or on their own property to stay away and call authorities. To kill the plants, they use a special pesticide.
Park managers determined that this area of land in southeast Michigan was historically a prairie. They're using fire to return it to that state, and to keep invasive plants and shrubs in check. (Photo by Mark Brush)
A burn crew member keeps an eye on a hot section of the 'burn unit.' (Photo by Mark Brush)
The blackened ground after the burn. The freshly burned ground traps heat causing soil temperatures to rise which encourages new plant growth. (Photo by Mark Brush)
Some natural areas need fire. A number of prairie plants and pine trees must have fire for their seeds to pop open or germinate. But burning a natural area can quickly turn into a wildfire without a team to keep it under control. The Great Lakes Radio Consortium’s Mark Brush spent a day with a burn crew… and brings us this audio postcard:
Transcript
Some natural areas need fire. A number of prairie plants and pine trees
must have fire for their seeds to pop open or germinate. But burning a
natural area can quickly turn into a wildfire without a team to keep it
under control. The Great Lakes Radio Consortium’s Mark Brush spent a day
with a burn crew… and brings us this audio postcard:
(sound of walking through dry grass and birds)
“Good morning, Hi, How’s it going?”
“Little dry?”
“It’s pretty dry, it’s forecasted, I think to be twenty one percent humidity…”
“My name is David Mindell, and I am the burn boss for this project. I’m a contractor that does ecological restoration. The first step is we’ll take a quick walk through and rake some of the fuel around stuff we don’t want to burn. This is the kind of thing if fire got in here, it’d burn for hours and hours and just put out a lot of smoke…”
“My name is Lee Root, and I just am a burn crew member. I’m filling up what’s known as an ‘Indian tank. It’s a backpack frame that has a water tank and a hand pump. This is our little portable fire engine, is what it is. So, you see where the black top is? If that was our fire, and we didn’t want the fire to come onto the grass, we would just…
(sound of squirting)
“…spray like that, and that would prevent the fire from crossing over.”
“Well, my name is Ross Orr, and I’ve been working with David for a couple of years, and um, we’re wearing these crazy, screaming yellow body suits that are flame-retardant fabric, and also helps keep us cool from the radiant heat of the burn, and big, big cumbersome helmets with visors that flip up and down…
(Sound of visor plastic clacking)
“…we’ll ingite using drip torches, which are these canisters filled with a mixutre of diesel and gas. It’s got a wick on the end, a burning wick, and as you tip the canister, it dribbles gas-diesel mix across the wick, and trails fire as you go.”
(sound of fire crackling and wind)
“Okay, I’m gonna burn it up right next to you Lee. All right, here we go.”
(sound of crackling and walkie-talkies)
“Catherine, keep coming right around.”
“Is this one of the crabapples we wanted to save, or they’re on the other end?”
“I believe they’re on the other end, unless they’re crabapples there?”
“Nope, it’s a hawthorne.”
“My name’s Catherine Marquardt, and I do whatever they tell me to do…
(sound of laughter)
“…whether it’s lighting fires or putting them out. Um, I think it looks like a Dr. Seuss story, actually, sometimes when you burn and it’s all black. You don’t get to see this very often, it’s very cool. And then it greens up so quickly, that’s the other amazing thing, is that if you come back here in a couple of days, it’s already getting green. So, it changes so quickly.”
“You know, I’m guessing it took probably forty-five minutes for the backburn to go a third of the way through the unit, and I think the headburn will run through the other two-thirds in about three minutes.”
(sound of large flames fading out)
(sound of walking, rubber squeaking and metal clanging)
Mindell: “And we’re, basically just walking around looking for things that are still smoking. Got a juniper that’s smoking at the base…
(sound of spraying)
“And just spraying out the smoldering bits.
“Burning is extremely fun, but it’s also a great management tool for improving the ecological quality of natural areas.”
(sound of wind and bird chirping)
HOST TAG: “This audio postcard of a prairie burn was produced by the
GLRC’s Mark Brush. To see photos of the burn and learn more about fire
as a management tool, you can visit glrc dot org.”
A new process called alkaline hydrolysis is forecasted to be a cheaper, safer way to dispose of animal carcasses. (Photo by Dr. Beth Williams, University of Wyoming, courtesy of CWD Alliance)
Animal research labs usually get rid of carcasses by burning them in incinerators. Now, a new more environmentally friendly technology is being used to dispose of the diseased dead animals and the lab supplies they contaminate. The new method has worked well enough that hospitals are considering it as a way to dispose of medical waste. The Great Lakes Radio Consortium’s Julie Halpert reports:
Transcript
Animal research labs usually get rid of carcasses by burning them in incinerators. Now, a new more environmentally friendly technology is being used to dispose of the diseased dead animals and the lab supplies they contaminate. The new method has worked well enough that hospitals are considering it as a way to dispose of medical waste. The Great Lakes Radio Consortium’s Julie Halpert reports:
Until recently, the only safe way to destroy diseased tissue and other infectious waste was to burn it in an incinerator. But dangerous chemicals such as dioxins spew from the incinerator smokestacks, and burning leaves behind a toxic ash.
(sound of machine whirring)
Now, there’s an alternative to burning. Dr. Gordon Kaye stands in a spotless room beside one of the units manufactured at a company he helped found, WR Squared, in Indianapolis, Indiana. The unit will eventually be used to dispose of 5,000 pounds of dead animals – about the equivalent of five large cows – that were used for veterinary research.
But there will be no smoke. There’ll be no fire.
Kaye’s idea for a new type of disposal technology began 12 years ago when he was a pathology professor at Albany Medical College. He was frustrated with how much it cost to dispose of dead research animals. So, he started experimenting with a new technology. And alkaline hydrolysis was born.
“Well, there are no air emissions from it. It’s a sealed system. It takes place in a hermetically sealed pressure vessel. No dangerous products are produced in it because of the temperature which it takes place.”
Alkaline hydrolysis works like this: infectious waste goes into a tightly sealed vessel, along with strong alkalis which are very caustic. The waste is then cooked at temperatures well above boiling. A chemical reaction causes the waste to break down. The infectious components are neutralized. When it’s over, you end up with two products: a sterile, water-like solution, that can head to a sanitary sewer system, and sterile crushed bones, the consistency of powder, that can be used as fertilizer. Because the end products are clean, they don’t require complicated disposal, so the process is cheaper than incineration.
WR squared now has 60 units in 15 states, primarily at research facilities. The U.S. Department of Agriculture has purchased several of them. New York was the first state to allow use of the technology. Ira Salkin directed that state’s medical waste program when it approved WR squared’s process.
“It has less potential problems than is being found with incineration and the use of incineration in the U.S. is decreasing and therefore their system holds great promise. As the numbers of incinerators decrease, one finds they have this alternative to be used to treat pathologic material.”
Environmentalists agree with Salkin that the technology is sound. Horhay Emmanuel is with Health Care Without Harm. He notes that it’s especially effective for one troublesome type of waste, cattle dead from Mad Cow disease.
“Not only does it destroy infectious agents, but it also destroys prion-contaminated waste. And prions are what are believed to cause things like Mad Cow disease, which are difficult to destroy, even by incineration, so WR squared has been shown to destroy these prions in the contaminated waste.”
Last April, The Environmental Protection Agency approved alkaline hydrolysis, along with incineration, as a way to treat Mad Cow diseased waste. And WR Squared’s Gordon Kaye sees that as a big future market.
Horhay Emmanuel, with Health Care Without Harm, says while alkaline hydrolysis is generally good for the environment, there is one concern. The fluid that’s produced could overwhelm some small town’s sewer systems. The company says in communities with small sewer systems, the solution can be released more slowly or during off-peak hours.
So, alkaline hydrolysis process is cheaper, it pollutes less, government agencies like it, and environmentalists find little to criticize.
Now, the company is broadening its reach to treat hospital waste. Many hospitals are using smaller, not very efficient incinerators that pollute more.
WR Squared’s Gordon Kaye says he expects big growth with this new method to dispose of medical and infectious waste as labs and hospitals look for ways to replace their incinerators over the next several years.
Fuel prices are higher this winter… but corn prices are down. That’s kindling a demand for corn stoves in some parts of the country. The Great Lakes Radio Consortium’s Shamane Mills reports:
Transcript
Fuel prices are higher this winter, but corn prices are down. That’s kindling a demand for corn
stoves in some parts of the country. The Great Lakes Radio Consortium’s Shamane Mills reports:
I always thought corn was something you ate. But I’m watching as my brother-in-law is stoking
his stove with golden kernels…
“In my case I use five gallon pails of corn, then just pour in slowly…”
(sound of kernels spilling into hopper)
I’d never seen a corn stove and my brother-in-law, Steve Springer, says he never thought he’d use
one. Once he did, he was hooked.
“Well, one thing about it is, it’s a renewable resource. Being a farmer myself, it’s something we
grow ourselves. This was in our home when we purchased the home – never had any exposure to
it. Since then, I like it immensely. Kicks out lot of heat.”
Corn stoves first became popular in the 1970’s when corn prices plummeted. There were
problems with the early stoves. Hardened clumps of burned corn, called clinkers, had to be
cleaned up and the corn didn’t burn efficiently.
Today, the stoves are making a resurgence because corn prices are down. New corn stoves are
better than the ones back in the 70’s. The stoves now have an agitator to stir the corn for a more
even burn and fewer clinkers.
Ed Bossert sells corn stoves at a store near where the Springers live. He says business is brisk.
“A lot of people come in to save money, a lot of people come in because it’s a renewable
resource, a lot of people come in because the pollution factor is basically nothing.”
Corn stoves produce less carbon dioxide and soot than burning wood or coal, so they seem more
environmentally friendly. But critics point out that the farm machinery used to grow the corn
burns fuel and generates pollution, so any gain from a cleaner burning fuel may be lost during
planting and harvesting.
While the environmental argument simmers, sales of corn stoves continue to heat up. Bossert says
he now sells as many corn stoves as he does wood stoves.
In larger cities such as Madison, Wisconsin the corn stoves don’t sell as well. At Top
Hat Fireplace & Chimney, only three customers have purchased corn stoves despite the best
efforts of sales staff like Mark Gilligan. Showing off the store’s one and only corn stove model,
he says it’s easy to maintain….
“They actually locate down below an ash drawer. That actually sits down below. There isn’t a
whole lot of ash from these pellet and corn stoves because it uses most of it up.”
Most corn stove dealers say a bushel or two a day will keep the cold away. With corn about two
dollars a bushel, that can seem like a bargain compared to natural gas prices, which are 20%
higher this year. But the initial cost of residential corn stoves can be steep.
Craig Tawlowicz owns Countryside Heating in north-central Wisconsin. He says new corn
stoves can cost two thousand… on up to six thousand dollars.
“So this is a long term investment. Most of the time, turn around savings, usually five to six
years pays off your investment.”
Wood stoves are not only more traditional, but they’re generally cheaper. So, wood stoves are
more popular. At Hearth and Home Fireplaces, Claire Barton says despite that… more customers
are considering corn stoves.
“It certainly makes sense for someone who has grain available to them and many of them will
burn corn as well as oats, wheat, barley, cherry pits. Things like that.”
The National Corn Growers Association promotes a lot of corn products. You’d think corn stoves
might be one of them – but spokeswoman Mimi Ricketts says it’s not one of the 600 items the
group touts.
“The National Corn Growers Association determines its issues based on priorities of member
states. Corn stoves is not one that’s been put on our radar screen. We are aware of them but we
have not actively promoted corn stoves.”
That’s probably because compared to other buyers of corn, such as livestock farms, corn syrup
processors and ethanol makers, corn stoves just don’t use a lot of corn. It’s not considered a big
market for farmers.
Instead, the big sales are going to those who make or sell the corn stoves. And because farmers’
harvest was so large this fall, corn stove retailers have found their cash crop this winter.
What happens to electronics when people don't want them anymore? The economics and environmental impact of e-waste disposal weighs heavily on minds all over the globe. (Photo by Michael Manger)
China is banning the import of scrap electronics. That eliminates one place where some U.S. companies were selling broken computers and electronic junk under the guise of “recycling.” The Great Lakes Radio Consortium’s Lester Graham reports:
Transcript
China is banning the import of scrap electronics. That eliminates one place where some U-S companies were selling broken computers and electronic junk under the guise of “recycling.” The Great Lakes Radio Consortium’s Lester Graham reports:
Each year, more than 60-million desktop computers are taken out of service in the U.S. About 85-percent of them end up in landfills. But some people take their old computers, electronics and appliances to be recycled. Unfortunately, that sometimes simply means being shipped to China and other Asian countries where the electronic gear is burned to retrieve the metal such as copper and steel. Burning the electronic gear releases all kinds of toxic chemicals. Now, China’s main English language newspaper, CHINAdaily, reports the government there is banning the imports of scrap electronic goods. The newspaper reports this marks a change in the Chinese government’s policy of always putting economic conerns in front of less tangible needs such as the environment.
For the Great Lakes Radio Consortium, this is Lester Graham.
Many cities create parks to try to incorporate green space into theirurban landscapes. But maintaining them can be expensive and laborintensive. Now, one city has created a unique solution–addingnaturalbeauty while saving money. The Great Lakes Radio Consortium’s Tasya Rosenfeld has the story:
Garbage incinerators are making a comeback as de-regulation
of the energy sector is providing new opportunities for electricity
producers. As The Great Lakes Radio Consortium commentator Suzanne
Elston points out, this trend may be taking us out of the frying pan
and into the fire:
Hogweed sap can make you more susceptible to sunburn. (Photo courtesy of the DNR)
