Pollution and Classroom Performance

  • Researchers at the University of Michigan are looking to see if air pollution is a factor in school kids’ health and academic performance. (Source: Motown31 at Wikimedia Commons)

Scientists are investigating whether
air pollution is affecting how well students
perform. Lester Graham reports:

Transcript

Scientists are investigating whether
air pollution is affecting how well students
perform. Lester Graham reports:

Researchers say we might be building schools in the wrong places. We build them
near interstates full of polluting cars and trucks, and we build schools downwind of
factories. Kids might be getting a big dose of air pollution everyday they’re at school.

Researchers at the University of Michigan want to look at whether it’s actually
affecting kids. Paul Mohai is the lead researcher.

“School-aged children are particularly vulnerable because their bodies are growing.
They’re considered a vulnerable population and that’s all the more reason we should
be looking at the toxic burden that they may face, both in the schools that they go to
and where they live.”

Mohai and his colleagues will look at all the social and economic issues, and then air
pollution to see if it’s a factor in school kids’ health and academic performance.

For The Environment Report, this is Lester Graham.

Related Links

Fair Trade Demand to Increase?

An advocate predicts more cities and consumers
will begin to demand more fair trade products. Those
are goods imported from overseas that come from businesses
that pay workers a decent wage and operate in a more
environmentally-friendly way. Chuck Quirmbach reports:

Transcript

An advocate predicts more cities and consumers
will begin to demand more fair trade products. Those
are goods imported from overseas that come from businesses
that pay workers a decent wage and operate in a more
environmentally-friendly way. Chuck Quirmbach reports:


Something certified as fair trade means it was grown or produced in a foreign
country in an environmentally sustainable way, by workers NOT employed in
sweatshops. Paul Rice heads a major US certification group Transfair. He says
fair trade is catching on with consumers who don’t mind paying more for better
quality:


“That trading up phenomenon is already there, and I think what fair trade does is
help people think more about quality in more than just the taste of the product,
but also the impact of the product. I think what people are starting to think about who grows my food, right?”


Rice acknowledges only about twenty percent of US residents are drinking fair
trade coffee or buying other products, but he says the movement is finding its
way into more mainstream stores. Rice predicts more communities will soon pass resolutions promoting fair trade.


For The Environment Report, I’m Chuck Quirmbach.

Related Links

FIGHT FOR AMERICA’S LONGEST RIVER (Part 1)

  • Wing dams along the Missouri River force the flow of water to the center, scouring the bottom of the river. Environmentalists say the Missouri has been turned into little more than a big ditch for barges. They support management plans that restore habitat for wildlife. (Photo by Lester Graham)

Rivers have been the life-blood of commerce in the United States since the
nation’s beginning. In 200 years, the machines of trade have evolved from flat-
bottomed wooden boats to today’s steel-hulled river barges. The rivers link
America’s natural resources with the industrial cities that propel its economy.
Decades of damming and dredging have turned the big rivers into shipping
channels. But in recent years, competing interests have argued in defense of
other uses of the rivers. In the first of three reports, Kevin Lavery looks at how
those groups seek to balance the economy and ecology:

Transcript

Rivers have been the life-blood of commerce in the United States since the
nation’s beginning. In 200 years, the machines of trade have evolved from flat-
bottomed wooden boats to today’s steel-hulled barges. The rivers link
America’s natural resources with the industrial cities that propel its economy.
Decades of damming and dredging have turned the big rivers into shipping
channels. But in recent years, competing interests have argued in defense of
other uses of the rivers. In the first of three reports, Kevin Lavery looks at how
those groups seek to balance the economy and ecology:


Long before interstates and over the road trucking, America moved its goods on
the water. River barges carry just about any kind of commodity. They emit less
pollution than trucks and trains… and the river route is cheaper than both the road
and the rail.


The nation’s farms, coal mines and quarries depend on rivers like the Mississippi,
Ohio and Missouri to keep their products moving. Business is healthy on the
Mississippi and the Ohio. But on the Missouri, barges carry just a third of the
cargo they did 30 years ago. Many shippers say drought and overregulated dam
releases make the water levels too unreliable to plan the big hauls that bring in
the most profit.


Paul Davis runs Interstate Marine Terminals, 200 miles upstream from where the
Missouri River meets the Mississippi, near St. Louis. He ships and stores
fertilizer from his dock. But Davis says when the river runs low, barges are not
his best option:


“The real adjustment that I’ve made is going from river to rail.”


Logistically, the adjustment is easy. The Union Pacific railroad line runs just a
few feet from Davis’ dock. But it costs him about 15 dollars more per ton to move
goods by rail. Davis says river barges might be profitable again if old feuds over
water management would end:


“There’s business out there. It could come back if people quit fighting and start agreeing
and confidence would return to shipping on the Missouri River. But I can’t afford to wait
and see… I’ve got to make adjustments.”


The fighting puts business against the environment. Shippers want enough
water to move freight. But environmentalists want the river to rise and recede
like it did before the Army Corps of Engineers started changing it.


The conflict goes back to the 1930’s. Congress ordered the Corps to make the
river safe for barges. That meant clearing snags and sandbars from a 735-mile
stretch from Sioux City, Iowa to St. Louis, Missouri. The Corps also confined the
river with earthen levees. Opponents say it turned the Missouri into a
characterless ditch.


The Corps spends 7 million dollars a year to maintain the channel. Spokesman
Paul Johnston says despite the dwindling volume of river traffic, the Corps is
mandated to keep the river open:


“The Corps of Engineers, like any federal agency, does not have the option to pick and
choose which laws it’s going to obey and not obey.”


But critics say wildlife has paid for the Corps’ mandate. Over the years, dams
and channels eliminated a half a million acres of wetland habitat. Birds lost their
sandbar nesting grounds, and fish no longer found shallow backwaters to lay their
eggs.


Among the hardest hit animals is the pallid sturgeon. It’s a long, flat-nosed fish
that dates back to the T-Rex. It’s been around 70 million years, and for the last
17, it’s been on the endangered species list.


Chad Smith directs the Nebraska field office of the environmental group
American Rivers. He says the pallid sturgeon’s fate shows the whole river is in
jeopardy:


“When it starts to decline, you know, that kind of creature that’s so in tune with the
Missouri as it was, is an indicator that maybe something’s not right, and it’s going to be
the first thing to fall.”


So Congress told the Corps to take on a recovery mission. The agency spends
more than 50 million dollars a year to rebuild shallow water habitat for fish and
birds. The Corps hopes a water resources bill pending in Congress will increase
its habitat restoration budget to 80 million dollars.


In 2006, the Corps launched its most controversial restoration program to date. It
released extra water from a South Dakota reservoir to mimic the natural flood
pulse that occurs on the Missouri River every spring. That triggers the sturgeon
to spawn.


Conservationists herald last year’s man-made spring rise as a long overdue sign
of progress. But barge companies on the lower Missouri are upset. They say
the spring rise brings a drop in the river’s depth in the summer… which means
less cargo they’re carrying and less money they’re making.


For The Environment Report, I’m Kevin Lavery.


ANCHOR TAG: Tomorrow, Kevin reports on the commercial barge
industry’s concerns over the Army Corps of Engineers’ control of the big
rivers.

Related Links

FIGHT FOR AMERICA’S LONGEST RIVER (Part 2)

  • Barge companies question the science of the Army Corps of Engineers' studies that indicate habitat restoration and changes in river management help threatened species and other wildlife. (Photo by Lester Graham)

The US economy relies heavily on the nation’s rivers to transport goods bound
for foreign markets. Each year river barges carry hundreds of millions of
tons of cargo to busy ports. Traffic is bustling on some rivers, but it’s dying on
others. Commercial shippers say their situation is made worse by attempts to
balance their interests against conservation. In the second of three reports,
Kevin Lavery explains why some barge companies say mismanagement is
squeezing them out of the marketplace:

Transcript

The US economy relies heavily on the nation’s rivers to transport goods bound
for foreign markets. Each year river barges carry hundreds of millions of
tons of cargo to busy ports. Traffic is bustling on some rivers, but it’s dying on
others. Commercial shippers say their situation is made worse by attempts to
balance their interests against conservation. In the second of three reports,
Kevin Lavery explains why some barge companies say mismanagement is
squeezing them out of the marketplace:


In 2004, America celebrated the bicentennial of Lewis and Clark’s Corps of
Discovery mission to the West. At the start of the 19th century, the Missouri River
was center stage in an age of discovery.


By the start of the 21st century, the river was in an age of discontent. Riverboat
companies, environmentalists, Indian tribes and state governments were
deadlocked in legal battles over water releases.


Paul Davis’ shipping terminal in Boonville, Missouri has been around for 36
years. In 2004, he watched two major shippers call it quits. One of them,
Blaskey Marine, was a family venture:


“And Blaskey had been in the towboat business on the Missouri River for as long as I can
recall, and business just got too tough for them, so they just gave it up. And that’s what
really was the beginning of the end in our involvement with barges, at least for the time
being.”


Industry watchers say the riverboats have been clanging their death knell for
a long time. In 1977, barges carried just over 3 million tons of cargo. Since then,
floods, drought and market forces have cut barge shipments by two-thirds. Chad
Smith is with the environmental group American Rivers in Lincoln, Nebraska:


“They don’t move a lot of tons, and agriculture basically dictates that grain moves the
market by truck and rail. Everybody agrees those numbers don’t lie.”


But everyone doesn’t agree. Paul Rhode is with the national shipping advocacy
group Waterways Council, Incorporated:


“People say barge traffic is dying on the Missouri. That’s not true. Barge traffic is being
killed by the way the Missouri river is managed right now.”


Rhode blames the industry’s woes on the Army Corps of Engineers, the federal
agency that regulates the Missouri River.


In May 2006, the Corps released more water than usual from a South Dakota
reservoir. The rise was meant to tell an endangered fish, the pallid sturgeon, to
spawn. Rhode says that artificial rise in the spring later lowered the river’s depth
in the summer. He says unpredictable flows kept shippers from carrying a lot of
freight… and making long-term plans:


“The levels could be managed much better. We don’t need a spring rise. We need water
down here in August and September. Barge traffic has been cut short by leaps and
bounds over the past few years, in part because of the spring rise issue.”


How short? Despite heavy rains earlier this year, the Corps plans to shorten the
navigation season by at least 45 days. That means shippers who normally finish
in December will be lucky to still be hauling by Halloween.


But there’s only so much water that can be released from upstream
reservoirs… and the Corps stands by its decision to raise the river. Spokesman
Paul Johnston says biologists are encouraged by the data they’re seeing on the
pallid sturgeon. And he says the man-made flood pulses are minor:


“They’re certainly not aggressive, at least in our perspective, and I know that there are
people who think that it’s too much too soon. But if we don’t do anything, then we
certainly will not have any data to back up any decisions.”


Historically, the Corps’ decisions tended to favor riverboats, especially in the
1930’s, when the Corps turned 735 miles of the Missouri into a shipping channel.
American Rivers’ Chad Smith says while that was viewed as the best course for
the river then, its time to set a new one:


“It’s now the year 2007 and I think our hopes and dreams have changed. And it’s probably
time for Congress to go back and see what’s happening in this basin with market forces in
agriculture and a lot of these big drivers that put pressure on the way we use and manage
the Missouri now, and see if there are things we need to do differently.”


Smith suggests some of those uses of the Missouri River might be changing
soon. With their balance sheets already razor-thin, barge operators worry those
changes might sink them.


For The Environment Report, I’m Kevin Lavery.


ANCHOR TAG: Tomorrow, Kevin reports on how the recreation and wildlife
preservation search for their place on the Missouri River.

Related Links

FIGHT FOR AMERICA’S LONGEST RIVER (Part 3)

  • Finding a balance between natural habitat and commerce on America's rivers is causing problems. (Photo by Lester Graham)

When Lewis and Clark traveled up the Missouri River 200 years ago, they
recorded the abundant wildlife they saw along their way. Fur trapping was a
thriving industry on Frontier Rivers. But it took another 100 years of over-hunting
for the US to realize it was wiping out its wildlife. Today, conservation,
commerce and tourism all intersect on the nation’s big rivers. Each of those
industries relies on a steady supply of water. In the last of three reports, Kevin
Lavery looks at how all of those interests share – and struggle – over water:

Transcript

When Lewis and Clark traveled up the Missouri River 200 years ago, they
recorded the abundant wildlife they saw along their way. Fur trapping was a
thriving industry on Frontier Rivers. But it took another 100 years of over-hunting
for the US to realize it was wiping out its wildlife. Today, conservation,
commerce and tourism all intersect on the nation’s big rivers. Each of those
industries relies on a steady supply of water. In the last of three reports, Kevin
Lavery looks at how all of those interests share – and struggle – over water:


The Missouri River is known as the Big Muddy. Sure, it’s muddy at its mouth
where it joins the Mississippi River near St. Louis. But a thousand miles
upstream, the Missouri cuts a gleaming blue ribbon through Bismarck, North
Dakota. It looks like paradise to Mike Peluso… and with a broad smile, he rushes
his boat smack into the middle of it.


Peluso grew up fishing on this river. It’s a place brimming with history. Lewis
and Clark camped here in 1804. As he’s fishing, Peluso points to a frontier-era
fort that now sits within a state park:


“That’s actually where Custer started off, right up there before he went to his final… Here’s
a bite!”


Peluso lands a 4-pound walleye. It’s the most abundant fish species in the upper
Missouri system, and he wants to keep it that way:


“Just going to let her go down. You know, hopefully my kids at some point in time will get
to enjoy the same thing I just did. (SPLASH). Oh yeah… she took off. Perfect.”


Fishing on the Missouri River is crucial to North Dakota’s economy. In the 1950’s
the Army Corps of Engineers dammed the Missouri River 80 miles north of
Bismarck. The formation of Lake Sakakawea gave rise to a 150 million dollar
annual recreation industry.


That industry largely exists because of the US Fish and Wildlife Service. The
Garrison Dam National Fish Hatchery breeds 80% of the state’s game fish.
There’s about 70 million walleye eggs in one building alone. But officials here
also care for fish that are never meant to be caught.


Rob Holm is with the Fish and Wildlife Service. He watches several pallid
sturgeons circling an 8,000 gallon tank. Each five-foot fish weighs about 60
pounds. The pallid has survived for 70 million years. But Holm says threats to
its habitat have made it an endangered species:


“If we can change things just enough to give them a fighting chance, I think it’s a good
thing. They’ve been around since the time of the dinosaurs. If we miss a beat on it now…
they’re not going to be there in 10 years.”


The pallid sturgeon was harvested for its caviar before it was federally protected.
But illegal catches still happen. Environmental groups see the pallid as a
barometer that gauges the overall health of the Missouri River. Chad Smith runs
the Nebraska field office of American Rivers:


“We lose the pallid sturgeon, that’s an indication that we may start to see problems with
the catfish and the paddlefish and the mallards and the bass, and then people are really
going to start screaming.”


The pallid sturgeon needs deep water to lay its eggs. In 2006, the Army Corps of
Engineers released extra water from a South Dakota reservoir to mimic the flood
pulse that cues the fish’s reproduction. It was a highly controversial act 15 years
in the making:


“I’m uncomfortable with the Corps playing God.”


Paul Rhode is with the national shipping advocacy group Waterways Council,
Incorporated. He says the artificial rise meant dropped water levels later in the summer.
That hurt commercial barge operators. Rhode questions the Corps’ methods:


“I hope there are studies going on to try to capture whatever it is that they’re doing to justify
having a spring rise. In past years it was to stimulate least tern and piping plover
populations, and then it was discovered that there was no science behind that. That was
just guesswork.”


The interior least tern and the piping plover are two birds that are also protected
by the Endangered Species Act. Spokesman Paul Johnston says the Corps has
evidence that its methods are working:


“Near Ponca, Nebraska we dredged out an old channel that had been closed off to create
shallow water habitat for the sturgeon and created an island. It was still being groomed
when the terns and plovers began nesting on it. We had to shut the bulldozer operator
down.”


The Corps says it understands the needs of all the different interests along the
Missouri River. That’s why it’s agreed to pay for an independent scientific study
of its habitat construction program. That study is expected to begin this fall. The
Corps says it’s still committed to trying to find a balance between nature and
business on America’s longest river. But barge owners, sportsmen and
environmentalists will try to tip that balance in their favor.


For The Environment Report, I’m Kevin Lavery.

Related Links

Growing Zones Warm Up

  • The National Arbor Day Foundation's revised hardiness zone map. (Photo courtesy of the National Arbor Day Foundation)

If you’ve been thinking about landscaping your yard, you should know things have
changed. The climate is warming so quickly that one organization has changed the
plant hardiness zone map. That’s the little map you sometimes see on the back of
seed packets. Lester Graham reports… you might want to check out the new map
before you spend hundreds of dollars on a tree that might not live long in your
warmer zone:

Transcript

If you’ve been thinking about landscaping your yard, you should know things have
changed. The climate is warming so quickly that one organization has changed the
plant hardiness zone map. That’s the little map you sometimes see on the back of
seed packets. Lester Graham reports… you might want to check out the new map
before you spend hundreds of dollars on a tree that might not live long in your
warmer zone:


You know, I’ve talked to a lot of gardeners and homeowners who do their own
landscaping about this plant hardiness zone map change, and at first they’re
kind of astounded. The growing zones are changing? Because it’s getting warmer?


But then, they sort of pause and think for a moment… and usually say something like,
“That makes sense.”


The United States Department of Agriculture issues the plant hardiness zone map.
It’s basically a map of the annual average low temperatures that helps folks figure
out what they can plant and expect to survive. But the USDA hasn’t updated its map
since 1990.


The spokesman at the National Arbor Day Foundation, Woody Nelson – I kid you not,
the Arbor Day guy’s name is Woody – Woody says his organization issued a new
map because it really needed to be updated:


“You know, people were asking us to help out, you know, ‘This old USDA map just doesn’t
seem to work for us anymore. I don’t think it’s accurate. What can you do to help?’
So we took it upon ourselves to give tree-planters the most up-to-date information
that we could.”


So the National Arbor Day Foundation looked at the low temperature data gathered
by the National Oceanic and Atmospheric Administration since 1990, and the people
were right: things are warming up:


“And over that 15-year span that we used, much of the country had warmed a full
hardiness zone.”


And there’s a ten degree difference from one zone to the next. It shows a real on-
the-ground trend.


Richard Andres is with Tantre Farm. They grow organic produce for farmers’
markets like this one in Michigan. Andres didn’t know about the new Arbor Day
Hardiness Zone map, but it makes sense to him. He says he’s seeing more
extremes:


“You know, last winter was unusually warm. The winter before, unusually warm.
So, we really didn’t even get a decent freeze. We had a huge amount of bugs the
following spring. So we are noticing more extremes.”


But a farmer or gardener can adjust things for annual plants. Long term, you’re
probably wondering whether you can now plant that dogwood or whether you
should plant that spruce from up north.


(Sound of sprinkler)


Phil Walsh sells a lot of trees at Lodi Farms nursery. He knew about the new Arbor
Day Hardiness Zone map. But, he says there’s a lot more to think about than just
the annual average low temperature when you’re thinking about planting:


“Cold is not the only, or really the most, important factor when determining plant
hardiness. Questions like soil: is it well-drained; is it not; is it wet; is it dry; is it acid
or is it alkaline; do you have wind; do you have shade? Questions like this: is it high
in organic material or low in organic material? These tend to have more impact on
whether or not plants survive than strictly the zone rating.”


Walsh says the trees are pretty tough, and most of them can adapt:


“Yes, things have warmed up over the last 15 years and they may well continue or it may change and it may go down. Pick a good, hardy plant that’s well-suited for your soil
and typically one that’s native here, that’s gone through these temperature changes
in the past and I don’t expect anybody’s going to have any problems with them.”


That’s not to say that every kind of tree is taking this in stride. For example, black
spruce trees adapted to Canadian and upper New England cold might not be such a
good choice as far south as it’s been grown in the past.


Woody Nelson at the National Arbor Day Foundation says trees native to the North
are starting to be affected by the warming climate:


“There’s a whole lot of white pines that have been planted in Georgia, in the South
as a nice landscape tree over the years. And now those white pines are coming
under a little bit of stress. The native lodge pole pines, the native loblolly pines in the
deep South, again native species are something that we want to promote and stick
with.”


So, the basic rule is: if the plant hardiness zone map has shifted one growing zone
warmer in just 15 years, you’ll probably want to stick to trees native to your area, or
from just a little south of you just in case this warming trend sticks around for a while.


For the Environment Report, this is Lester Graham.

Related Links

Report: Toxic Waste Sites Near Minorities

A new report says toxic waste facilities are more likely to be built near the homes of racial minorities. Rebecca Williams reports the study follows up on a landmark report from twenty years ago:

Transcript

A new report says toxic waste facilities are more likely to be built near the homes of racial minorities. Rebecca Williams reports the study follows up on a landmark report from twenty years ago:


Both studies examined how close people live to toxic waste sites. The new report finds minorities who live in poorer neighborhoods are the most likely to live near toxic sites. The report says little has changed in 20 years and problems have been made worse by weak environmental laws.


Paul Mohai is a professor at the University of Michigan and a co-author of the study. He says racial minorities in poorer neighborhoods are often unfairly treated.


“They’re quite a bit more at risk than white Americans because they do tend to live in communities that not only have more pollution burdens but they also lack resources frankly that more affluent white communities have.”


Mohai says minorities living in poor neighborhoods tend to have less access to elected officials. He says that can make it harder to fight against the siting of a new waste facility.


For the Environment Report, I’m Rebecca Williams.

Related Links

Fruit Frostbite From Record Lows

Freezing temperatures recently descended on large sections of the country.
Record lows were registered from the south to the plains states. The
prolonged frost means entire crops of fruit and grain could be lost. Adam
Allington reports:

Transcript

Freezing temperatures recently descended on large sections of the country.
Record lows were registered from the South to the Plains states. The
prolonged frost means entire crops of fruit and grain could be lost. Adam
Allington reports:


Paul Peters has 500 acres of apples and peaches in central Missouri. Peters
says above average temperatures during the day and night advanced the
growing season by 2-3 weeks:


“We really didn’t cool down at night; I think probably was more of a concern then
reaching 60-70 degrees in the daytime. One of my partners here said he’d never seen an
apple blossom in March and this year he did.”


But then a week-long frost hit, right when crops were at their most
vulnerable.


Extensive damage has also been reported on crops of winter wheat, grapes
and cherries.


Some farmers will be able to till under failed wheat and alfalfa crops and
substitute corn. However, it may not be that simple since corn seed supplies
are already tight from higher than normal plantings for ethanol production.


For the Environment Report, I’m Adam Allington.

Related Links

Hydrogen: A Pollution Shell Game?

  • A Honda FCX Concept and Honda's hydrogen refueling station. Critics say fossil fuels are still used to produce hydrogen, meaning there's still pollution. (Photo courtesy of Honda)

Lots of people in the automotive industry expect hydrogen to be a major
fuel source in the future. Cars that run on hydrogen don’t emit
greenhouse gases from the tailpipe. In fact, they don’t emit anything
except water. It might sound like magic, but there are some costs to
fueling the future on hydrogen. Julie Grant reports:

Transcript

Lots of people in the automotive industry expect hydrogen to be a major
fuel source in the future. Cars that run on hydrogen don’t emit
greenhouse gases from the tailpipe. In fact, they don’t emit anything
except water. It might sound like magic, but there are some costs to
fueling the future on hydrogen. Julie Grant reports:


There are a lot of young guys checking out the hybrid cars on display at
this exhibit. Sales associate Chris Beckham is putting on his tie as
he walks over to the sleek, futuristic cars Honda hopes to lease to
consumers as soon as next year:


“It’s a fuel cell-powered vehicle. It runs on hydrogen. The only
emissions it has is water. So, it’s a really great vehicle for the
environment.”


Beckham hopes he gets a chance to lease one:


“What do you think, are you ready to drive one of these?”


“Absolutely. I can’t wait to get my hands on one of these. If you ever get thirsty,
just stand behind the car with a cup.”


Most cars available today, even those that run on alternative fuels,
still emit at least one kind of pollution: carbon dioxide.


David Robillard and his two sons are looking at cars at this exhibit.
He’s worked at Ford Motor Company for 36 years. He thinks hydrogen
will be the long-term energy solution because it doesn’t emit any pollution
from the tailpipe:


“All leaders in market going to try to be first in that segment, and I think
it’s going to be huge. I think 10-15 years from now, it’s going to be a
revolutionary mass transportation system that we have.”


That’s music to Steve Ellis’s ears. He’s Honda’s manager of fuel cell
marketing and says there’s a need to transition from an oil-based
transportation system to hydrogen. Ellis says hydrogen will be a
cleaner alternative:


“Only hydrogen offers the opportunity to have zero carbon emissions from
the vehicle – zero CO2 emisssions AND zero CO2 emissions from the
fuel.”


Ellis sees research and development of hydrogen cars as a noble goal.
But not everyone thinks hydrogen is going to be the climate change savior:


“From one standpoint, I think it’s great. From another standpoint, I
think we also need to check other options as well.”


Paul Erickson is a leader of hydrogen research at the University of
California at Davis. He’s director of the school’s Hydrogen Production
and Utilization lab
. Erickson remembers curling up on the couch as a kid, his lungs burning from all
the ozone pollution in southern California, and he wanted to clean up the
air. But he doesn’t think hydrogen is the best solution that’s
currently available:


“There may be other options that are not as say, politically saavy, but
are options that from a technological standpoint make a lot more
sense.”


It takes energy to create the hydrogen used to run a car. With today’s
technology, that energy is almost always natural gas, but it could be
any fossil fuel. Erickson says those cars don’t reduce energy use or
pollution:

“You’re taking, let’s say some fuel – that could be coal, that could be
any type of energy source – and you convert that energy into hydrogen
and you ship that to the user… it gives you a nice warm fuzzy feeling
saying I’m not part of the problem. But you know what? All you’re doing is
shifting that pollution upstream.”


Some engineers say that’s not necessarily a bad thing – that it would
be easier to control pollution coming from a few power plants than
from the millions of cars emitting greenhouse gases today. But Honda’s
Steve Ellis says hydrogen cars don’t create as much pollution as gas-powered vehicles. Even though nearly all of them need fossil fuels to
produce the hydrogen:


“Even with that method of doing it, we have over 50% reduction when you
factor in in wheel-to-well emissions compared with today’s gasoline cars.”


(Grant:) “50% cleaner?”


“50% CO2 reduction.”


Ellis says hydrogen can be made using renewable fuel sources such as
solar, ethanol, and methanol, but so far it’s not cost-effective. In
the meantime, Honda and other companies expect to start producing some
consumer model hydrogen cars that use fossil fuels in the next few
years.


For the Environment Report, I’m Julie Grant.

Related Links

Hydrogen Explodes Onto Car Scene?

  • A Honda FCX Concept and hydrogen refueling station. There is concern about the safety of handling hydrogen. (Photo courtesy of Honda)

Within the next few years, you might see a new type of car in dealer
showrooms… one that runs on hydrogen. Many engineers and car company
officials predict that hydrogen vehicles will replace gasoline power in
the next 10 to 15 years. But lots of people think hydrogen is too
explosive and wonder if a hydrogen-based economy will be safe.
Julie Grant reports:

Transcript

Within the next few years, you might see a new type of car in dealer
showrooms… one that runs on hydrogen. Many engineers and car company
officials predict that hydrogen vehicles will replace gasoline power in
the next 10 to 15 years. But lots of people think hydrogen is too
explosive and wonder if a hydrogen-based economy will be safe.
Julie Grant reports:


Sales associate Chris Beckham hears a lot of concerns about the new
Honda fuel-cell car on display at a recent car show:


“I know a lot of people are kind of worried about the safety of the
hydrogen vehicle because it’s basically like running on an atom bomb.”


Honda fuel cell marketing specialist Steve Ellis rolls his eyes when he
hears comments like that. The Cold War-era hydrogen bomb comes to mind
for people because it’s one of the few times they’ve heard the word
“hydrogen” used in conversation. Another time is when people talk
about the hydrogen-filled blimp, the Hindenburg. Ellis wants to
clear the air about the Hindenburg disaster.
The huge zeppelin burst into flames, and a lot of people blame the hydrogen:


“But history has now shown that it was the coating, the covering of the
material that actually was sustaining the fire. The hydrogen itself of
course being flammable, whatever that cause was, it did ignite. But
the flame was sustained by the coating. That’s what people see.”


Ellis says hydrogen has gotten a bad rap:


“When in reality, science has proven that it wasn’t the guilty party.”


(Grant:) “But it is a very flammable substance?”


(Ellis:) “Sure. As is gasoline.”


There’s still controversy over whether the hydrogen or the coating
caused the Hindenburg to burn. Regardless. Many energy experts say
hydrogen is more flammable then gasoline, but Ellis says the dangers of
a hydrogen fire aren’t any worse then a gasoline fire, they’re just
different.


He says people are used to dealing with liquid gas at the fueling
station. But in some ways, hydrogen could be considered less dangerous
then gas. When gas spills it pools up on the ground, and if someone
drops a cigarette – yipes! – it could be a long day for firefighters.


But hydrogen goes into cars in gaseous form. If there’s a hydrogen
leak, Ellis says it’d be easy to put out a fire:


“So with, you know, fire systems at the station, if there’s any
detection of a flame or any incident like that, as soon as the source
is shut off, the fire’s out, it’s gone. First responders and many fire
departments have said they feel like responding to a hydrogen fire…
it’s like, by the time they’ll get there, they’ll be nothing to put out.
It’ll likely have taken care of itself.”


That’s one advantage of using a light-weight fuel like hydrogen: it
dissipates quickly into the air because it’s lighter then air. But
because it’s so light, each cubic foot doesn’t pack that much energy.
That’s why cars can’t store that much hydrogen in the tank.


Hydrogen-expert Paul Erickson says that low energy content also creates
other safety problems. Erickson is director of the Hydrogen Production
and Utilization Lab
at University of California-Davis. In order to
make cars that hold enough hydrogen to travel a respectable distance
between re-fuelings, he says they have to use a lot of pressure to
squeeze enough hydrogen into a tank:


“It’s just very difficult to get the range out that you’d like. And so you
end up having to pressurize the hydrogen to 3,000, now we’re up to
5,000, now up to 10,000 pounds per square inch. I wouldn’t want to sit
on a 10,000 psi tank of anything, much less hydrogen.”


Erickson says car companies understand the dangers of combining
hydrogen’s high flammability with high pressure in the tanks. They
don’t want any hydrogen to escape from the tank if there’s a collision
and they don’t want the tank to blow up. So, the tank is probably the
strongest component on the hydrogen vehicles being built today.


That’s not the case with regular gas cars. Steve Ellis at Honda says
they won’t release too many consumer vehicles to start. One reason is
to slowly get people used to handling hydrogen safely.


For the Environment Report, I’m Julie Grant.

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