In this issue the World Meteorlogical Organisation has identified that
the "ozone hole" has reduced not due to an increase in ozone levels, but due to
a mild increase in stratospheric temperature above Antarctica. Whilst the
meteorologists look to the skies, the powers that be are pursuing the
opportunity to develop a global mechanism to facilitate carbon trading. We are
indeed on the verge of a new carbon era.
Looking back, it is interesting to see the development of society as
resources are - from the age of iron, bronze, copper, lead (later found to have
adverse properties), gold, to coal (industrial age), oil, asbestos, silicon (not
to be mistaken for silicone, which also had a major impact...) and now carbon
dioxide - what will be the next mineral or material that will change our lives
as profusely as CO2 promises to do?
Often we hear talk of "the power of the internet", however now there is a
good indication of the actual energy consumed by the internet and associated
equipment - in the order of 9.4% of the US electricity consumption - it's no
surprise that energy efficiency is becoming more important throughout the IT
sector.
Corn to ethanol is and will continue to be big in the US, no doubt driven
by the need to reduce dependence upon foreign energy supply, however the adverse
effects on "greenbelt" land being utilised rather than being left as prairie
land (considered for its ecology).
in the mid 1880's, the Mount Morgan Mining Company built the fortune (on
Australian Gold) that Mr William Knox D'Arcy used to seed what is now known as
BP. BP has recently been fined for poor environmental performance in Texas and
Alaska - resulting in some of the largest criminal fines ever.
Meanwhile, in the Democratic Republic of Congo, tribal pygmies have
started making a stand against logging of the rainforest which they depend upon
to maintain their way of life.
Back to technology developments - in Tokyo there is a tram powered by
Lithium batteries which can recharge in under one minute, giving 15km of travel.
This means that overhead wires are not required everywhere.
On a lighter note, there is an interesting picture of ceiling mould - you
may or may not wish to look at it, but it does reinforce the fact that indoor
environment does have a notable impact on the wellbeing of indoor
inhabitants.
?>
The World Meteorological Organization, WMO, said Thursday. Instead, the smaller size of the ozone hole is related to the mild temperatures in the Antarctic stratosphere during the 2007 southern hemispheric winter.
Since 1998, only the ozone holes of 2002 and 2004 have been smaller than this year's hole, said the UN's climate and weather agency.
|
|
The Antarctic ozone hole as measured on October 16, 2007 (Image courtesy European Space Agency) |
The ozone hole over
The 2007 ozone hole is relatively small both in terms of area - about 25 million square kilometers - and the amount of ozone destruction, which occurs when ozone reacts with chlorine, bromine, nitrogen, hydrogen, and oxygen gases.
Most ozone resides between 10 and 40 kilometers above the Earth's surface. This atmospheric region is called the stratosphere and it contains about 90 percent of all the ozone in the atmosphere.
"The stratosphere still contains more than enough chlorine and bromine to cause complete ozone destruction in the 14 to 21 kilometer altitude range," the WMO said.
Scientists emphasize that the smaller ozone hole this year is not a sign of recovery.
"Although the hole is somewhat smaller than usual, we cannot conclude from this that the ozone layer is recovering already,” said Ronald van der A, a senior project scientist at Royal Dutch Meteorological Institute.
"This year's ozone hole was less centered on the South Pole than in other years," he said, "which allowed it to mix with warmer air, reducing the growth of the hole because ozone is depleted at temperatures less than -78 degrees Celsius."
During the southern hemisphere winter, the atmospheric mass above the Antarctic continent is kept cut off from exchanges with mid-latitude air by prevailing winds known as the polar vortex. This leads to very low temperatures, and in the cold and continuous darkness of this season, polar stratospheric clouds are formed that contain chlorine.
|
|
The largest Antarctic ozone hole on record, measured in September 2000. (Image courtesy NASA) |
As the polar spring arrives, the combination of returning sunlight and the presence of polar stratospheric clouds leads to splitting of chlorine compounds into highly ozone-reactive radicals that break ozone down into individual oxygen molecules.
A single molecule of chlorine has the potential to break down thousands of molecules of ozone, scientists say.
First recognized in 1985, the Antarctic ozone hole is caused by the presence of ozone destroying gases in the atmosphere such as chlorine and bromine. These originate from manufactured products like the refrigerants chlorofluorocarbons, CFCs. They have still not vanished from the air but are on the decline as they are banned under the Montreal Protocol, signed in 1987.
The Antarctic ozone hole typically persists until November or December, when the winds surrounding the South Pole, known as the polar vortex, weaken, and ozone-poor air inside the vortex is mixed with ozone-rich air outside it.
The amount of ozone-depleting gases reached a maximum in the Antarctic stratosphere around the year 2000. This amount is now declining slowly at a rate of about one percent per year.
The stratosphere is expected to contain enough chlorine and bromine to cause severe ozone holes for another 10 to 20 years, the WMO says.
During this period, the severity of the ozone hole will be determined by the meteorological conditions of the stratosphere during the Antarctic winter. These conditions are related to global warming, says the WMO.
Increasing amounts of greenhouse gases in the atmosphere will lead to lower temperatures in the stratosphere. This increases the risk of severe ozone holes in upcoming decades.
Ozone in the stratosphere absorbs some of the Sun's biologically harmful ultraviolet radiation, a beneficial role.
By contrast, excess ozone at Earth's surface that is formed from pollutants is considered bad ozone because it can be harmful to humans, plants, and animals.
http://www.ens-newswire.com/ens/oct2007/2007-10-19-02.asp
Tuesday, 30 October 2007, 9:59 am
Press Release: UK Government
The British Prime Minister has welcomed the launch of a new international
partnership aimed at promoting and improving carbon trading.
In a recorded
message, Mr Brown called the launch of the group in Portgual today a
"significant step forward" in the fight against climate change. Building a
global mechanism for trading carbon emissions is "fundamental" to reducing
greenhouse gases while enabling economic development, he said.
The
International Carbon Action Partnership (ICAP) will provide a forum for
countries currently engaged in cap and trade initiatives with the aim of
establishing a wider and more coordinated global market. The UK has signed up to
ICAP along with Germany, France, Portugal and the state of California amongst
others.
The PM said:
"The launch of the International Carbon Action
Partnership is a truly significant step forward in the global effort to combat
climate change.
"Building a global carbon market is, I believe, fundamental
to reducing greenhouse gas emissions while allowing economies to grow and
prosper. Trading emissions between nations allows us all to reach our greenhouse
gas targets more cost-effectively. And it therefore allows us to reduce
emissions by more than we could by acting alone."
The Prime Minister's
words came as the Government published its Climate Change Bill detailing a list
of measures aimed at reducing emissions and creating a low carbon economy.
Releasing the report, Envirionment Secretary Hilary Benn said it was time to
"step up the fight" on climate change.
The UK has set its cap for the
second phase of the European trading scheme, from 2008 to 2012, at 13 percent
below its 2005 emissions. Last week the PM said that the UK also remained
committed to targets on the development of renewable enrgy sources.
http://www.scoop.co.nz/stories/WO0710/S00727.htm
.
(PRWEB) September 25, 2007 -- Equipment powering the internet accounts
for 9.4% of electricity demand in the U.S., and 5.3% of global demand, according
to new research from Uclue.com.
The annual energy demand of computers,
monitors, networking, and transmission equipment for the internet amount to 350
billion kWh in the US -- 9.4% of the 3.7 trillion kWh used in total. Similarly,
world demand for the internet is 868 billion kWh, or 5.3% of total global
electricity consumption of 16.33 trillion kWh.
The largest demand for
internet-related energy use comes from desktop computers and monitors, which
account for two-thirds of total use. Networking equipment such as modems and
routers are another sizable draw, as are the substantial power demands for data
processing and equipment cooling at data centers. Actual data transmission, on
the other hand, chiefly over telephone lines, is a small component --
approximately 0.1% -- of overall energy demand.
"As far as we know, this is
the first estimate of total internet electricity use," said David Sarokin, the
Uclue researcher who compiled the data. "The raw numbers were all out there, but
they hadn't been assembled in this way before."
http://www.prweb.com/releases/2007/9/prweb555778.htm
5:00AM Tuesday October 30, 2007

Photo / Reuters
Beaumont, (pop 286, 70 per cent
Republican, 30 per cent Democrat,) is a town so tucked away in the Flint hills
of Kansas that it boasts its own fly-in hotel.
It is way off the beaten
track, far from the bustle of the interstates, and it was here that I met Pete
Ferrell, a rebel rancher burning with anger at the way he says American
agriculture is being subverted to the detriment of the planet.
Almost
unnoticed by urban America, the last 35 million acres of prairie - deliberately
left alone to preserve a precious ecology - is being ploughed up to produce
ethanol from corn.
Pete the rancher came striding into the tiny Beaumont
Hotel wearing jeans and cowboy shirt, and sat down in the small cafe overhung by
aircraft memorabilia to tell his and Beaumont's story.
For more than 100
years his family has been fattening cattle on rich Kansas Bluestem prairie
grass, among the last remaining stands of original prairie.
Most of the
tallgrass that once covered millions of acres of the Great Plains has been
ploughed under. Only isolated pockets remain, some preserved by conservation
grants.
Now, even in the Flint Hills, what is left of the prairie is under
threat as farmers race to cash in on a bonanza created by planting corn for
ethanol production, to ease America's worries about future fuel supplies.
The
corn economy is nothing short of a disaster for the environment, for the farm
economy and potentially for the Flint Hills, in Ferrell's view.
The prairie
is some of the most fertile and productive land on the planet.
A typical
section of prairie grass shelters nearly 800 types of birds, mammals and
reptiles. It also thrives on being heavily grazed and then left fallow. Prairie
grasses hide nearly two-thirds of their buds and mass beneath the ground, and
when Native Americans set fire to it to burn off brush, the fresh growth lured
back the buffalo they depended on. The Flint Hills were once home to the Kansas
Indians who lived off the migrating buffalo. The buffalo were wiped out and the
Indians starved off the land to the benefit of the cattle trade.
The cattle
came to be fattened up and the cattle barons and ranchers from Texas and
Oklahoma stayed in Beaumont's little hotel, while the cowboys camped
outside.
In the 1950s, for the convenience of cattlemen, a grass airstrip was
put in, allowing planes to taxi up the main street and park at the hotel. These
days, the hotel attracts flyers from around the world who delight in taxi-ing
their planes down Main Street.
What is annoying Pete Ferrell is not the
occasional aircraft crossing the road, but what is happening in his own back
yard: the rapid ploughing under of the ancient prairie lands he
loves.
Ninety-five per cent of the tallgrass prairie which once blanketed 240
millions of acres of the MidWest is already gone. It was broken up a decade ago
by the "sodbusters" of old. Now King Corn, as farmers call their subsidised
bonanza crop, is destroying the last surviving prairie lands.
Some
conservation minded ranchers like Pete Ferrell still fatten cattle the
old-fashioned way with pasture, and then ship them off to Chicago. But most
American cows are raised indoors in enormous feedlots, fattened with corn and
grains, which they are only able to digest with the help of
antibiotics.
America wants to become less dependent on foreign oil, but
instead of cutting back on consumption and reducing emissions, it is planning to
substitute ethanol for petrol.
Ethanol or grain alcohol is the high-octane
corn poteen that hard-pressed Mid-Western farmers and top-tier Washington
politicians hope will soon replace petrol.
Across the country there is a
madcap dash for biofuels, home-brewed ethanol, and vegetable oil diesel
substitutes made from such crops as soybeans, sugar cane and corn.
Because
the carbon in biofuels comes from the atmosphere, the theory is that burning it
could be carbon neutral. But producing ethanol from corn actually consumes as
much fossil fuel as the ethanol itself replaces.
Worse, as the remaining 35
million acres of American soil set aside for soil and wildlife conservation are
targeted by farmers, it will release even more carbon into the atmosphere from
fields of prairie left deliberately fallow.
Long known as America's
breadbasket, the Great Plains have been the country's primary source of wheat
for over 100 years. Insecurity over future oil supplies - worsened by the
disastrous situation in Iraq - has created a situation in which ethanol
production is expected to reach 60 billion gallons by 2030.
It was energy
anxiety, and fears about cancer from additives added to petrol to raise its
octane, rather than climate change that caused Congress to decree two years ago
that 7.5 billion gallons of the country's fuel must come from crops.
This
triggered a boom in grain alcohol distilleries in the Mid-West, followed by a
surge in railroads to carry the grain and the ethanol, which happens to be too
corrosive to use in the country's network of fuel pipelines. So great has been
the rush to cash in, that a glut of ethanol hit the market causing prices to
plunge 30 per cent since spring.
This has forced the Government to fork
out more subsidies to the loss-making ethanol producers and blenders of ethanol
and petrol. Another problem is that the Government provides crop insurance and
rewards rather than penalises farmers whose crops keep failing, so there is no
incentive to stop farming marginal land.
Driving across the plains of
Kansas to its geographical centre, I watched its farmers bring in their biggest
corn harvest since World War II. Corn now completely dominates the
landscape.
Bruce Babbitt, like Al Gore, is a nearly man of US presidential
politics. Like Al Gore he is an environmentalist who ran for the White House and
failed. Babbitt fell at the first hurdle, in Iowa, in the heart of America's
Corn Belt, although he later became US Secretary of the Interior in charge of
its national parks and is now chairman of the WWF(US).
"Riding across the
Iowa landscape at dawn is a beautiful experience," Babbitt said. "You can almost
hear the corn growing."
It is only when you stop to think that the beauty
starts to fade - there is just one crop, no wildlife, the skies are empty and
the creeks run muddy. It is an industrial landscape stripped of its diversity,
an American tragedy.
Environmentalists are now seeing corn being grown
for ethanol in places it was never seen before, from southern Texas to the
marshy "pothole prairie" of rural Iowa. The total private grassland area
declined by almost 25 million acres from 1982 to 2003 - and the pace is
quickening along with energy insecurity.
"For now the prairie is in
crisis," Babbitt says. "My great fear is that the push for ethanol will cause a
great wave of 'sodbusting' and break up what remains of the prairie
ecosystem."
The greatest loss of habitat has been in the Corn Belt, which
takes in a vast stretch from Iowa to Kentucky. There, some five million acres -
about 25 per cent of grassland - has already been lost to ethanol paid for by
subsidies that cost the US taxpayer about US$2.7 billion ($3.5 billion) in
2006.
But the worst damage may be taking place in Montana and the
Dakotas, where farmers who have been hurting economically are embracing King
Corn with abandon.
The fuel E-85 (85 per cent ethanol, 15 per cent petrol)
which arrives at the pumps is sold as a "completely renewable, domestic,
environmentally friendly fuel".
And it is America's 300 million consumers
who enable the corn bonanza to take place.
American taxpayers hand over
US$82.1 billion in subsidies a year to farmers and the political system is
rigged to keep it that way.
Small, poorly populated Mid-Western farm
states have extra political clout because every state, however small or
under-populated, has two senators and along with it disproportionate influence
in Congress.
But many of the "farmers" collecting the subsidy cheques of $1
million-$2 million are absentee landlords in far away cities like LA, New York
and even London.
Jarid Manos is head of the Great Plains Restoration Council,
a multicultural organisation of mostly black and Native American
members.
"This corn-based ethanol orgy is not only helping destroy what tiny
fragments of virgin prairie we have left," he said.
"It also releases
thousands of years of soil-stored carbon into the atmosphere as the native
prairie is destroyed, not to mention all the carbon pollution from the energy
used in its production."
But his is a voice in the wilderness, drowned
out by the roar of the 18-wheeler trucks as they head across the interstate
laden with corn or ethanol. Back in Beaumont, Kansas, Pete Ferrell remains
adamantly opposed to the corn mania gripping the country. He takes me on a tour
of his ranch, where cattle graze as hundreds of wind turbines turn gently
overhead.
He too was harshly criticised by environmentalists when he
installed them two years ago for ruining, as they said, one of the most pristine
environments in the American Mid-West.
"Now we have tourists coming out to
see us and business in the hotel is booming as a result," he said.
http://www.nzherald.co.nz/section/story.cfm?c_id=39&objectid=10472794&pnum=0
Release date: 10/25/2007
(Washington, D.C. - Oct. 25, 2007)
of federal environmental regulations in Texas and Alaska. In addition to the penalty, the company will spend approximately $400 million on safety upgrades and improvements to prevent future chemical releases and spills.
"BP committed serious environmental crimes in our two largest states, with terrible consequences for people and the environment," said Granta Nakayama, assistant administrator for EPA's Office of Enforcement and Compliance Assurance. "Today's agreement sends a message that these types of crimes will be prosecuted."
This is the largest criminal fine ever assessed against a corporation for Clean Air Act violations and the first criminal prosecution of the requirement that refineries and chemical plants take steps to prevent accidental releases. The requirement was passed in 1990 as part of the Clean Air Act following the explosion at the Union Carbide chemical plant in Bhopal, India where thousands were killed and injured.
BP will pay $50 million for a catastrophic explosion in 2005 that killed 15 people and injured more than 170 others at its Texas City refinery. BP will also pay a $12 million fine for spilling 200,000 gallons of crude oil onto the Alaskan tundra and onto a frozen lake in March 2006, resulting in the largest spill that ever occurred on the North Slope.
In addition to the $50 million fine, the company pleaded guilty to a felony violation of the Clean Air Act and will serve three years of probation for the Texas City incident. BP is also required to complete a facility-wide study of its safety valves and renovate its flare system to prevent excess emissions at an estimated cost of $265 million.
For the Alaska spill, BP pleaded guilty to one misdemeanor of the Clean Water Act and will serve three years probation, pay $4 million to the National Fish and Wildlife Foundation to support research and activities on the North Slope, and pay $4 million in restitution to the State of Alaska. BP is required to replace 16 miles of pipeline at an estimated cost of $150 million.
On March 23, 2005, an explosion occurred at the Texas City refinery when hydrocarbon vapor and liquid released from a stack and ignited during the process of increasing octane levels in unleaded gasoline. Investigators learned that operators regularly failed to follow written standard operating procedures for ensuring mechanical integrity of safety equipment. The stack where the release occurred had been in poor operating condition since at least April 2003. Alarms failed to function or were ignored.
The Texas City refinery is BP's largest U.S. refinery, which covers more than 1,200 acres and can process as much as 460,000 barrels of crude oil per day. The refinery was previously owned by Amoco, which merged with BP in December 1998.
In March 2006, BP spilled more than 200,000 gallons of crude oil on the North Slope in Alaska. A second spill occurred in August 2006, but was quickly contained after leaking approximately 1,000 gallons of oil. Investigators determined the leak was caused by a build up of sediment in the pipe, and that BP failed to properly inspect or clean the pipeline, which is required by law to prevent pipeline corrosion. The investigation revealed that in 2004, the company became aware of increased corrosion in the pipeline.
5:00AM Tuesday October 16, 2007
By Jonathan Brown
Forty million people in the Congo, including 600,000
pygmies, depend on the rainforests for survival
.
Photo / Reuters
The rumble of giant machinery heralds the arrival of
loggers deep in the heart of the Congo rainforest. For the pygmy tribes who have
inhabited this thick jungle for millennia, the sound of the advancing column is
the sound of encroaching hunger and the loss of a way of life stretching back
hundreds of generations.
"They bring with them huge machines which go
deep into the forest and make noise which frightens all the game animals away,"
says Adrian Sinafasi, the man seeking to alert the outside world to the plight
of central Africa's pygmies. "When the loggers arrive, they bring many workers
who are needed to fell the trees. They also need to eat and start hunting but,
rather than use traditional weapons in the right season, they hunt with firearms
and don't care about seasons or how much food they take."
Sinafasi, who
was displaced from his ancestral home in the eastern Democratic Republic of
Congo, is leading a delegation of pygmies to meet the new head of the World Bank
in Washington this week. He hopes the talks could lead to a deal to safeguard
the world's second-largest rainforest. There is mounting optimism that when the
representatives of some of Africa's most remote tribes arrive in the US capital,
they can capitalise on outrage over the bank's plan to turn 60,000sq km of
pristine forest over to European logging companies.
Forty million people
in the Congo depend on the rainforests for survival. Among them are up to
600,000 pygmies who are engaged in a battle over plans to allow millions of
hardwood trees to be felled, many to make garden furniture and flooring for
European homes. As well as retaining nearly 8 per cent of the world's carbon
dioxide, the rainforest is home to a vast biodiversity, including the bonobo
apes unique to the Congo river basin.
The indigenous tribes scored a
victory last month when their complaints about logging were upheld by the bank's
independent experts. Observers believe the bank's board of directors is poised
to accept the principle that forest peoples should have a final say in any
future development.
The panel, which visited Congo to investigate the
pygmies' claims, accepted evidence that the value of the trees had been wildly
overstated and officials had failed to consider other sustainable uses for the
wood.
It is claimed that far from bringing development and riches,
logging is causing widespread malnutrition, especially among children. Felling
is also blamed for re-igniting violence in the region, which is still recovering
from years of civil war.
Sinafasi, who leads a coalition of 12 pygmy groups,
said he would call on the new bank president, Robert Zoellick, to deliver on
promises made by his predecessor Paul Wolfowitz. He claimed that his people only
learned their homelands were to become logging areas when bulldozers rumbled
into their villages.
He said: "When the logging companies arrive, they
restrict our right to use the forest and forbid us access to vast areas. They
cut pell-mell, with no consideration for the trees we depend on for caterpillars
to eat, or the places where we can find mushrooms or get honey. We have no say
about whether a tree should stand or fall."
Plans to allow industrial
logging in the Congo were drawn up after the World Bank moved back into the
country in 2002, aiming to turn it into Africa's main timber producer. While the
civil war cost millions of lives, peace has brought with it a new threat as
Western companies return to exploit the nation's new-found stability. Roads are
being driven through the eastern forest and, to the west, railways and ports are
being upgraded around Kinshasa, the capital.
Campaigners fear that
over-development, coupled with widespread corruption signals the beginning of
the end for the rainforest.
Simon Counsell of the Rainforest Foundation -
a British charity which is backing the pygmies - said: "The board of the bank
has the chance to avert a major environmental and humanitarian disaster. It
should insist on an end to industrial logging of Congo's forests and work with
the Congolese Government to find non-destructive ways of managing them for the
benefit of Congo's people."
As well as the World Bank, pressure for
change is also mounting on its third-largest donor - the British Government,
which has a permanent seat on the bank's board. In August, more than 200 MPs
signed a motion calling for an end to destruction of the forest.
A
spokesman for the Department for International Development said Britain had
spent £50 million ($131 million) protecting the Congo basin and was urging the
bank to continue with a moratorium on the granting of further logging
concessions.
http://www.nzherald.co.nz/section/story.cfm?c_id=39&objectid=10470039&pnum=0

The institute will start conducting test runs in Sapporo at the end of
November to check the streetcar's capacity. Powered by the onboard battery, the
vehicle runs at a maximum speed of 40 kph for 15 kilometers and is capable of
converting 70 percent of its deceleration energy into electricity, which it
sends back to the battery. The rest of the power is supplied by recharging
stations, where the streetcar connects its pantograph to overhead wires.
The
streetcar powered by a lithium battery has been designed to be barrier-free and
has a low floor. According to the institute, it uses about 10 percent less power
than existing streetcars. In 1987, when the Japanese National Railways(JNR) was
privatized and divided into seven Japan Railways(JR) companies, the Railway
Technical Research Institute and the Railway Labor Science Institute were merged
into one railway research center- the Railway Technical Research
Institute.
http://www.newlaunches.com/archives/tram_runs_on_lithium_battery_and_recharges_in_under_a_minute.php

Scientific studies show that mold in the walls and ceiling of
homes substantially raises the risk of a asthma and other respiratory problems
and adds $3.5 billion to the annual national health bill.
Photo credit: Mike
McNickle.
A pair of studies published in the journal Indoor Air have
quantified the considerable public health risks and economic consequences in the
United States from building dampness and mold.
One paper by William J. Fisk,
Quanhong Lei-Gomez and Mark J. Mendell, all with the Environmental Energy
Technologies Division of the Lawrence Berkeley National Laboratory (Berkeley
Lab), concludes that building dampness and mold raised the risk of a variety of
respiratory and asthma-related health outcomes by 30 to 50 percent.
"Our
analysis does not prove that dampness and mold cause these health effects," says
Fisk. "However, the consistent and relatively strong associations of dampness
with adverse health effects strongly suggest causation by dampness-related
[pollutant] exposures."
The second paper, by David Mudarri of the U.S.
Environmental Protection Agency (EPA) and Fisk uses results of the first paper
plus additional data on dampness prevalence to estimate that 21 percent of
current asthma cases in the U.S. are attributable to dampness and mold
exposure.
"Of the 21.8 million people reported to have asthma in the
U.S., approximately 4.6 million cases are estimated to be attributable to
dampness and mold exposure in the home," says the study. In addition, this paper
estimates that "the national annual cost of asthma that is attributable to
dampness and mold exposure in the home is $3.5 billion." The paper also
summarizes the considerable evidence of adverse health effects from dampness and
mold in offices and schools, and suggests that exposure to dampness and mold in
those venues appear to have similar health impacts on those
exposed.
Mudarri and Fisk suggest that "a significant community response"
is warranted given the size of the population affected and the large economic
costs. Preventative and corrective actions include:
• better moisture
control during the building's design;
• moisture control practices
during construction;
• improved preventive maintenance of existing
buildings to include a comprehensive moisture control program including control
of water intrusions from outside, plumbing leaks, condensation and humidity
control, and other causes of moisture accumulation or mold growth.
The
Berkeley Lab paper provides quantitative estimates of the increased risks of
having current asthma, being diagnosed with asthma, and having related health
effects when people live in homes with visible dampness or mold problems. These
estimates are based on a statistical analyses of a large number of previously
published studies, none of which by themselves are a suitable basis for overall
risk quantification.
The EPA paper's results are based on the analyses of
studies of this health issue cited in a 2004 report released by the Institute of
Medicine (IOM) of the National Academy of Sciences and more recently published
studies. The IOM report, which is considered the current consensus of the U.S.
scientific community, concluded that excessive indoor dampness is a public
health problem but did not offer any overall quantitative
assessment.
Fisk is Acting Division Director of Berkeley Lab's
Environmental Energy Technologies Division. When writing these papers he was
head of the division's Indoor Environment Department. Mudarri was a senior
economist and research program manager in the Indoor Environments Division at
the U.S. EPA and has recently retired.
These studies are part of the Indoor
Air Quality Scientific Findings Resource Bank project, funded by the Indoor
Environments Division, Office of Radiation and Indoor Air of the EPA. The
project is a cooperative venture between EPA and Berkeley Lab to quantify the
health and productivity impacts of indoor air exposures and make those data
publicly accessible
http://eetd.lbl.gov/newsletter/nl26/eetd-nl26-2.html
Daily Average Energy Price |

30 July 2007 to 30 October
2007
http://new.comitfree.co.nz/comitfree/open/home.jsf

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