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	<title>Isabelle Roughol&#039;s portfolio &#187; Science &amp; environment</title>
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	<description>The portfolio of young journalist and writer Isabelle Roughol</description>
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		<title>Diabetes a little-known but devastating killer in Cambodia</title>
		<link>http://portfolio.isabelleroughol.com/diabetes-a-little-known-but-devastating-killer-in-cambodia/</link>
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		<pubDate>Thu, 26 Mar 2009 14:42:52 +0000</pubDate>
		<dc:creator>Isabelle Roughol</dc:creator>
				<category><![CDATA[Features]]></category>
		<category><![CDATA[Science & environment]]></category>
		<category><![CDATA[Cambodia]]></category>
		<category><![CDATA[development]]></category>
		<category><![CDATA[diabetes]]></category>
		<category><![CDATA[health]]></category>
		<category><![CDATA[poverty]]></category>

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		<description><![CDATA[26 March 2009: A poor health infrastructure and little education leave many Cambodian diabetics ignorant of their disease and without the basic care that could save their lives.
(Photo: A rice seller at Phsar Thmey — Central Market — in Phnom Penh. One of the reasons for a high diabetes rate is poor Cambodians&#8217; habit of [...]]]></description>
			<content:encoded><![CDATA[<p>26 March 2009: A poor health infrastructure and little education leave many Cambodian diabetics ignorant of their disease and without the basic care that could save their lives.</p>
<p>(Photo: A rice seller at Phsar Thmey — Central Market — in Phnom Penh. One of the reasons for a high diabetes rate is poor Cambodians&#8217; habit of filling their stomach with cheap, white rice. 30 August 2009. By Isabelle Roughol)</p>
<p>By Isabelle Roughol</p>
<p>A poor, tropical country such as Cambodia is expected to have its share of health issues: malaria, malnutrition and HIV/Aids come to mind, as well as a slew of exotic parasites. But diabetes, a disease many incorrectly associate with times of plenty, is in fact a much bigger threat to this poor country, as ignored as it is devastating.</p>
<p>Even by the most conservative estimates, there are four times as many diabetics in Cambodia as people living with HIV/Aids. It could be 10 times more: few studies have been conducted, but the figure most commonly cited is 255,000 diabetics in the country in 2005. As Cambodians start feeling the effects of the world financial crisis and recede into poverty, the threat of the disease will only grow for the urban poor.</p>
<p>“People always mistakenly think that it is the disease of rich people, and that’s far from true,” said Dr Jacqueline Dicquemarre, the president of Mission Care-Development Organization, an NGO with a diabetes program in Phnom Penh. “It isn’t at all the rich’s disease. It’s everyone’s disease.”</p>
<p>About 1 in 10 urban Cambodian and 1 in 20 rural ones are diabetic, according to joint studies from the Ministry of Health, Cambodian Diabetes Association, European Center for Diabetes Studies and French drug company Servier.</p>
<p>“They have the rates of developed countries where there already were a lot of [diabetics], such as the United States, Canada, Finland. At first, it is indeed really surprising,” Dicquemarre said.</p>
<p>Diabetes is a chronic disease that causes the body to either not produce enough insulin or not use it effectively. Insulin is a hormone that controls sugar levels in the blood stream. High blood sugar levels can over time damage many of the body’s systems, especially nerves and blood vessels. Uncontrolled diabetes can lead to heart disease, strokes, blindness, kidney failure, amputations, and eventually death. The World Health Organization predicts a doubling of the number of diabetics in the world by 2030.</p>
<p>Cambodia has drawn the short straw, combining three factors that account for the high diabetes rate, Dicquemarre explained. Urbanization leads to unhealthy lifestyles, which leads to overweight, a contributing factor in diabetes. Cambodians also might be genetically more prone to diabetes because the people who survived past famines and reproduced had metabolisms that better stored calories from food; others died of starvation. People with this capacity to “store” food are thus more genetically inclined to put on weight and develop diabetes when they can eat full meals.</p>
<p>“There would have been because of that difficult past…a sort of natural selection in these populations in favor of individuals who burn less calories than others, the ‘thrifty’ ones,” Dicquemarre explained. “And when they waste less, of course, they put on weight as soon as they have more food.”</p>
<p>The third factor is purely Cambodian, or at least regional: rice. A bowl of steamed Jasmine rice has a glycemic load of 46, three times that of a can of soda, according to a list compiled by Sidney University researchers. The glycemic load index compiles the quantity and quality of carbohydrates found in any food. The higher the number, the likelier the food is to raise blood sugar levels.</p>
<p>That’s where diabetes ceases to be a rich person’s disease. As the country faces new economic hardships, low-income Cambodians are increasing the part of rice—a cheaper food—in their diet, and their blood sugar shoots up, Dicquemarre said.</p>
<p>“When eaten alone, [white rice] is almost like getting sugar in an IV,” Dicquemarre said.</p>
<p>But, argued Dr Jean-Claude Garel of Naga Clinic, a longtime physician here, rice has always been a part of the local diet and diabetes is recent.</p>
<p>“I have seen the evolution in 15 years of my practice. Diabetes, 15 years ago, wasn’t a big problem locally,” but it is fast becoming one, he said. The issue is that people are quickly changing to an urban lifestyle without any education on what it might do to their health.</p>
<p>Prevention and lifestyle education is indeed necessary and would be much cheaper than treating the many complications of diabetes, said Dr Yel Daravuth, national professional officer for Tobacco-Free Initiatives and Health Promotion at the World Health Organization.</p>
<p>HIV/Aids and diabetes have much in common: affected people can live for decades if the disease is managed through a rigorous treatment. Left uncontrolled, the diseases both lead to a slow and painful death, with the sick becoming disabled and an economic burden on their communities.</p>
<p>But while international donors have tackled HIV/Aids, which reduction is one of the Millenium Development Goals, diabetes remains ignored, said Maurits Van Pelt, director of Mopotsyo, an NGO with a peer education program for poor people with diabetes.</p>
<p>“The message is this is a public health and poverty disaster that needs to be addressed, and it gets zero attention from health policymakers,” Van Pelt said.</p>
<p>According to figures compiled by Mopotsyo, 60 percent of health sector donations to Cambodia go to communicable diseases, with HIV/Aids topping the list. Only 1 percent is devoted to non-communicable diseases. Lifestyle-related health issues, such as diabetes, obesity, tobacco and alcohol use, while deadly, get little attention, Yel Daravuth said, but added he could not confirm those figures.</p>
<p>“Not so many people die from bird flu, but a lot of money is put into it because people are concerned, people are scared of it,” he said.</p>
<p>The Ministry of Health identified the fight against non-communicable diseases as one of three goals in the government’s Health Strategic Plan 2008-2015, recognizing that lifestyle changes were likely to make NCD rates skyrocket in the next few years. Yel Daravuth said he hoped that would mean increased funding.</p>
<p>The government’s strategy is to reduce risk behaviors, improve access to treatment and better the public health sector. The plan says nothing of funding or precise methods, however. The plan’s objective is to lower, without a specific target, the diabetes prevalence rate in public hospital patients, reported at 2 percent in 2005. But since many diabetics are still undiagnosed, improving access to treatment could actually bring up the prevalence rate, at least on paper.</p>
<p>Cambodia could start addressing the issue without spending much money, Van Pelt argued. Low-cost peer education programs could teach diabetics to manage their disease, and government oversight of doctors and pharmaceutical companies could help keep the price tag low on essential drugs, he said. Without government control, drug companies lobby doctors to prescribe their most expensive drugs, and uninformed patients don’t know the difference, he said.</p>
<p>“If you have somebody living on $1 a day or $2 a day, it makes a very big difference what is on that prescription. If your medical bill is $40 a year or $300 a year, it’s going to be the different between whether you’re going to have money to eat or not,” he said.</p>
<p>“It is possibly for many Cambodians to pay for their own medicine because the medicine for diabetes can be really cheap,” he added.</p>
<p>Yel Daravuth argued drugs were expensive mostly because they must be imported.</p>
<p>In rich countries, more than half of diabetics are over 65 and have been controlling their disease for decades. They often die from something else, Dicquemarre said. Low- and middle-income countries account for 80 percent of diabetes deaths, according to the World Health Organization. There are no statistics for Cambodia, but in Micado’s diabetes program at Preah Kossamak hospital, only one in 15 patients has had diabetes for more than a decade, Dicquemarre said. Most simply can’t survive 10 years to their disease.</p>
<p>“For those who need treatment, since the patient must pay for the totality of the prescriptions here, the biggest difficulty is to have a regular treatment. It’s very dependent on economic conditions,” she said, explaining that poor patients only take their medication on days they can afford it.</p>
<p>For diabetics, blood sugar levels must be controlled all day, every day, for the rest of their life; otherwise, the treatment is useless, Dicquemarre said. If the economic crisis sends more people back into extreme poverty, it will be that many more people who don’t take their medicine, she said. She added that she was worried that a government policy to increase payment recovery in public hospitals would put one more barrier between the poor and the treatment they need.</p>
<p>The story of diabetes in Cambodia is like that of any disease. It is the story of the gap in health care access between rich and poor. In France, Dicquemarre explained, a quick laser operation can stop the bleeding of blood vessels in the eye, a common consequence of diabetes. Here, without money, trained specialists and equipment, people go blind.</p>
<p>Because the sick pay for treatment, not the state, the public cost of diabetes isn’t so much in the medical expenditures. It is an opportunity cost: hundreds of thousands of people who could be productive and instead wither away on a sick bed for years.</p>
<p>“No funding for diabetes and no policy attention is causing poverty and unnecessarily causing the disability of people,” Van Pelt said. “They could live 30 years, 40 years and die from something else.”<strong></strong></p>
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		<title>Environment evangelist makes rounds in Phnom Penh</title>
		<link>http://portfolio.isabelleroughol.com/environment-evangelist-makes-rounds-in-phnom-penh/</link>
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		<pubDate>Tue, 10 Feb 2009 09:03:21 +0000</pubDate>
		<dc:creator>Isabelle Roughol</dc:creator>
				<category><![CDATA[Features]]></category>
		<category><![CDATA[Politics]]></category>
		<category><![CDATA[Science & environment]]></category>
		<category><![CDATA[Cambodia]]></category>
		<category><![CDATA[global warming]]></category>
		<category><![CDATA[governance]]></category>
		<category><![CDATA[health]]></category>
		<category><![CDATA[pollution]]></category>
		<category><![CDATA[poverty]]></category>

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		<description><![CDATA[10 February 2009: A French doctor is trying to convince Cambodian decision-makers of the urgent need to deal with global warming and pollution.
(Photo: A fire set voluntarily to clear forest on the Bolaven Plateau in Laos. 8 March 2009. By Isabelle Roughol.)
By Isabelle Roughol
Environmental activist Dr Francis Glémet arrived in Cambodia about three weeks ago [...]]]></description>
			<content:encoded><![CDATA[<p>10 February 2009: A French doctor is trying to convince Cambodian decision-makers of the urgent need to deal with global warming and pollution.</p>
<p>(Photo: A fire set voluntarily to clear forest on the Bolaven Plateau in Laos. 8 March 2009. By Isabelle Roughol.)</p>
<p>By Isabelle Roughol</p>
<p>Environmental activist Dr Francis Glémet arrived in Cambodia about three weeks ago with no contacts and no introductions. Since then, he&#8217;s been knocking on doors, burrowing his way through Phnom Penh&#8217;s media and academic circles and calling up government officials.</p>
<p>The retired pharmacist who speaks too fast in the joyful accent of southeastern France and likes having dessert in the middle of the afternoon is an unlikely prophet with a simple gospel: no government, not even a poor one, can afford to ignore pollution and global warming any longer.</p>
<p>Jumping from one topic to the next, his conviction evident, he spewed in a recent interview a litany of pollution-related ailments: asthma, cardio-vascular disease, obesity, Alzheimer&#8217;s, heavy metal poisoning, all sorts of cancers, and the latest, diabetes, recently found to be facilitated by air pollution. Not to mention the decreased fertility that, in the very long run, could mean the slow extinction of humanity, he added.</p>
<p>He spewed solutions, too: incinerating trash at least, if not recycling it; prohibiting a dangerous chemical in plastics; reducing packaging; requiring particle filters on new and diesel cars; setting up public transportation in the capital, and so on.</p>
<p>&#8220;It&#8217;s true, this discourse is out of this world [in Cambodia.] But I believe that today, whatever the contingencies of a country are, we all live on the same Earth. The global problem will catch up with us sooner or later,&#8221; he said.</p>
<p>Glémet is the president of France&#8217;s National Medical Coalition for Health and Environment, or CNMSE, a 1-year-old alliance of 3,500 health professionals who want people to live green, if for nothing else, to preserve their lives. All volunteers, the members reach out to government officials and media wherever they travel in the hope of influencing policy and creating an environmental consciousness.</p>
<p>Dr Claude Thuan, a French endocrinologist who traveled with Glémet, is his sobering voice.</p>
<p>&#8220;We must go step by step,&#8221; Thuan said. &#8220;What Dr Francis Glémet talks about is an ideal, but the ideal doesn&#8217;t exist [in reality].&#8221;</p>
<p>Cambodia has many other issues to address, Glémet conceded, and he is not optimistic about the results of this month-long visit.</p>
<p>&#8220;It is by repeating things, it is by having loudspeakers,&#8221; that you get results, he said. &#8220;It&#8217;s certain that this first mission may end on just being listened to. If we are listened to, somewhere we&#8217;ve opened a door.&#8221;</p>
<p>Glémet met with Heng Nareth, director of pollution control at the Ministry of Environment.</p>
<p>&#8220;I explained him the situation in our country: water pollution, air pollution, waste management,&#8221; Heng Nareth said Monday.</p>
<p>&#8220;I don&#8217;t know what he&#8217;s going to do. He&#8217;s just only an NGO. We really appreciate his NGO&#8217;s contact with the ministry, but he did not say any promise,&#8221; he added, before hanging up the telephone when asked about the government&#8217;s anti-pollution measures.</p>
<p>That is a typical reaction: governments are interested in the message but want him to bring ready-to-go projects with funding, even though the CNMSE has no budget, Glémet said. Meetings in Cambodia went well, but funding is always the issue, he added.</p>
<p>&#8220;We don&#8217;t have financial means, we only have our knowledge and our good will,&#8221; he said.</p>
<p>&#8220;Our mission is first and foremost to sound the alarm,&#8221; he added.</p>
<p>And alarm there must be, explained Minh Cuong Le Quan, manager of the climate change unit at the environmental NGO, Geres. Cambodian farmers are the first to feel the effect of global warming, when swarms of brown grasshoppers and recent droughts followed by unusually strong rains destroy their crops.</p>
<p>&#8220;The interest that people have in protecting the environment is not ideological; it&#8217;s existential,&#8221; he said.</p>
<p>However, the link between pollution, climate change and health problems is still something few Cambodians understand and need to be more educated about, Le Quan said.</p>
<p>For instance, when trash is burnt in heaps on the side of the road, including plastic waste from the textile industry, dioxins are released and eventually find their way into the food chain, he explained. When chickens were found to contain dioxins in 1999 in Belgium, it created a scandal all over Europe.</p>
<p>&#8220;No scandal comes out in Cambodia because people are not aware and we&#8217;re used to living in a very contaminated environment,&#8221; he added.</p>
<p>The government is conscious of environmental issues, but because of Cambodia&#8217;s usual governance issues, not enough is done, he said. For now, it would be more effective to appeal to economic interests, by advertising the business opportunities in waste management and other green industries, he added.</p>
<p>There is also a need for more studies that would give an accurate picture of Cambodian pollution on which the government could base its policies, he said, a view echoed by Glémet.</p>
<p>One rare study, led by researchers from Japan&#8217;s Kanazawa University with help from Cambodian officials, showed hydrocarbon particles concentration in Phnom Penh to be more than seven times that of Bangkok, based on samples taken in 2005.</p>
<p>The stake is to not see in Cambodia the vertiginous rise in cancers other diseases seen in the West in the past two decades, said Glémet, who goes back to France on Thursday and plans to return to Cambodia for another &#8216;mission.&#8217;</p>
<p>&#8220;To walk around at 5 pm, and to have red eyes, to have a pressing coughing fit and to practically lose your voice, as happened to me yesterday [Feb 1], it means something,&#8221; he said. &#8220;It&#8217;s true that when you live in this country, you get immunized, but for how long?&#8221;</p>
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		<title>Mekong: a refuge of biodiversity on the brink</title>
		<link>http://portfolio.isabelleroughol.com/mekong-a-refuge-of-biodiversity-on-the-brink/</link>
		<comments>http://portfolio.isabelleroughol.com/mekong-a-refuge-of-biodiversity-on-the-brink/#comments</comments>
		<pubDate>Tue, 16 Dec 2008 13:50:41 +0000</pubDate>
		<dc:creator>Isabelle Roughol</dc:creator>
				<category><![CDATA[Science & environment]]></category>
		<category><![CDATA[biodiversity]]></category>
		<category><![CDATA[Cambodia]]></category>
		<category><![CDATA[Mekong]]></category>
		<category><![CDATA[wildlife]]></category>

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		<description><![CDATA[16 December 2008: Cambodia&#8217;s new openness to the world is a boon for scientists but also for developments that harm wildlife.
(Photo: Chiromantis samkosensis, a frog from Cambodia&#8217;s Cardamom Mountains, has green blood and turquoise bones. Courtesy of WWF.)
By Isabelle Roughol
With an average of two new species per week being discovered in the area over the [...]]]></description>
			<content:encoded><![CDATA[<p>16 December 2008: <strong>Cambodia&#8217;s new openness to the world is a boon for scientists but also for developments that harm wildlife.</strong></p>
<p>(Photo: Chiromantis samkosensis, a frog from Cambodia&#8217;s Cardamom Mountains, has green blood and turquoise bones. Courtesy of WWF.)</p>
<p>By Isabelle Roughol</p>
<p>With an average of two new species per week being discovered in the area over the past 10 years, the Greater Mekong has revealed itself to be a hotbed of biodiversity and a godsend for scientists, according to a WWF report released Monday.</p>
<p>At least 1,068 new species and thousands of invertebrates were identified between 1997 and 2007 in Cambodia, Vietnam, Laos, Thailand, Burma and China&#8217;s Yunan province, the report said. But the Mekong area is also threatened by rapid development and requires the coordinated action of all governments if those species are to survive.</p>
<p>&#8220;The situation is becoming urgent. The Greater Mekong forms a large proportion of the Indo-Burma hotspot&#8230;[which] ranks as one of the top five most threatened biodiversity hotspots in the world, with only five percent of its natural habitat remaining,&#8221; according to the report, entitled First Contact in the Greater Mekong.</p>
<p>Forty-four new animal and plant species have been discovered in Cambodia, much less than the 319 found in Vietnam, WWF Cambodia Country Director Teak Seng said on Monday. The fact that Vietnam logged more new species than Cambodia can be explained by the lack of scientific capacity here because of the Khmer Rouge regime and years of war.</p>
<p>&#8220;In the future, I think there will be more discoveries because [Cambodia is] still unknown. Researchers continue to investigate, particularly on plants,&#8221; Teak Seng said.</p>
<p>New species identified in Cambodia include a frog, chiromantis samkosensis, which was found in 2007 in the Cardamom Mountains, located in the southwest of the country, which has green blood and turquoise bones. Also discovered was the woolly bat kerivoula titania, which was also discovered last year; and the pocket-sized snake lycodon cardamomensis, found in 2002.</p>
<p>Even more new species discovered in recent months did not make it into the report, Teak Seng added.</p>
<p>In the region, the most surprising species included a plate-sized spider hiding in caves in Laos and a bright pink millipede in Thailand that fends off attackers with cyanide.</p>
<p>The report identified the building of hydropower dams and the conversion of forested land for cash crop cultivation as the main threats to the region&#8217;s biodiversity, along with logging, over fishing, population growth, economic development and wildlife trade.</p>
<p>&#8220;Development should be [in] parallel with conservation&#8230;. These two pillars should be treated as equal, important priorities in the government agenda,&#8221; Teak Seng said, adding that for now economic development seemed to override conservation considerations, and that he hoped the new discoveries noted in the report would spur governments to act more strongly.</p>
<p>There is political will to protect the environment, Teak Seng added, pointing to the high proportion of protected areas in Cambodia compared to other countries. But the government now has to improve its management capacity to effectively implement its environmental policies, he added.</p>
<p>The report called on all six governments around the Mekong to work together and agree to formalize conservation of a 600,000 square km transboundary zone around the river.</p>
<p>&#8220;I think it&#8217;s a very good idea, but the thing is some countries along the Mekong River want to work together but some countries want to take advantage of each other,&#8221; said Seng Bunla, Cambodia country director for Conservation International.</p>
<p>&#8220;Some countries build a dam without thinking about the impact on the countries located lower on the Mekong,&#8221; Seng Bunla added, giving the example of dams in Vietnam affecting fish migrations and the livelihood of Cambodians downstream.</p>
<p>Officials at the Ministry of Environment could not be reached for comment Monday.</p>
<p>(Additional reporting by Phorn Bopha)</p>
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		<title>French researcher receives Nobel Prize for discovering AIDS virus</title>
		<link>http://portfolio.isabelleroughol.com/french-researcher-receives-nobel-prize-for-discovering-aids-virus/</link>
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		<pubDate>Tue, 07 Oct 2008 08:48:07 +0000</pubDate>
		<dc:creator>Isabelle Roughol</dc:creator>
				<category><![CDATA[Breaking news]]></category>
		<category><![CDATA[Science & environment]]></category>
		<category><![CDATA[academia]]></category>
		<category><![CDATA[AIDS]]></category>
		<category><![CDATA[Cambodia]]></category>
		<category><![CDATA[France]]></category>
		<category><![CDATA[health]]></category>
		<category><![CDATA[medicine]]></category>
		<category><![CDATA[Nobel prize]]></category>

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		<description><![CDATA[7 October 2008: Françoise Barré-Sinoussi heard news of her prize while on a cooperation trip in Cambodia. 
(Photo: Françoise Barré-Sinoussi at the French Embassy in Phnom Penh on the day she received the Nobel Prize of medicine. 7 October 2008. By Isabelle Roughol)
By Isabelle Roughol
Françoise Barre-Sinoussi, a French researcher, was in Phnom Penh on Monday [...]]]></description>
			<content:encoded><![CDATA[<p>7 October 2008: <strong>Françoise Barré-Sinoussi heard news of her prize while on a cooperation trip in Cambodia. </strong></p>
<p>(Photo: Françoise Barré-Sinoussi at the French Embassy in Phnom Penh on the day she received the Nobel Prize of medicine. 7 October 2008. By Isabelle Roughol)</p>
<p>By Isabelle Roughol</p>
<p>Françoise Barre-Sinoussi, a French researcher, was in Phnom Penh on Monday when she learned she was to receive the Nobel Prize in Medicine for her discovery in 1985 of the human immuno-deficiency virus that causes AIDS.</p>
<p>&#8220;It&#8217;s a moving moment for me, all the more moving that I received the news in Cambodia,&#8221; Barre-Sinoussi said at a reception in her honor at the French Embassy.</p>
<p>&#8220;Despite this prize, I will always be here to work in cooperation with this country, which is dear to me,&#8221; she added.</p>
<p>Barre-Sinoussi, who has long worked in cooperation projects between France and Cambodia and makes frequent trips here, shares the Nobel prize with her French co-researcher Luc Montagnier and German researcher Harald Zur Hausen for his work on cervical cancer.</p>
<p>Speaking of current AIDS research, Barre-Sinoussi, who directs a research laboratory at the Pasteur Institute in Paris, said much still needs to be done.</p>
<p>&#8220;There is still an enormous, enormous amount of research to do, even extremely basic research,&#8221; she said. &#8220;Is a vaccine possible, yes or no? I cannot answer that question today.&#8221;</p>
<p>Barre-Sinoussi said that she was attending on Monday the bi-annual Cambodge Sante conference at the University of Health Sciences in Phnom Penh when she was inadvertently informed of her prize by a journalist who telephoned from France asking for comment.</p>
<p>&#8220;It proves that French cooperation in Cambodia seeks to offer the best and that in fact, we do not have a discounted cooperation; we do the best cooperation possible,&#8221; French Ambassador Jean-François Desmazières said.</p>
<p>&#8220;We don&#8217;t send students; we send the masters,&#8221; he said.</p>
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		<title>MU researcher improves on an old, no-oil way to power cars</title>
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		<pubDate>Thu, 08 Jun 2006 16:30:44 +0000</pubDate>
		<dc:creator>Isabelle Roughol</dc:creator>
				<category><![CDATA[Features]]></category>
		<category><![CDATA[Science & environment]]></category>
		<category><![CDATA[academia]]></category>
		<category><![CDATA[Mizzou]]></category>
		<category><![CDATA[natural gas]]></category>
		<category><![CDATA[oil]]></category>
		<category><![CDATA[transportation]]></category>

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		<description><![CDATA[8 June 2006: For the past century, natural gas used for transportation has required bulky, high-pressure tanks. An MU researcher has now found a way to store it in a regular car tank at low pressures, opening the path to a wider commercial use of this alternative hydrocarbure.
(Photo: A New York City cab seen from the [...]]]></description>
			<content:encoded><![CDATA[<p>8 June 2006: <strong>For the past century, natural gas used for transportation has required bulky, high-pressure tanks. An MU researcher has now found a way to store it in a regular car tank at low pressures, opening the path to a wider commercial use of this alternative hydrocarbure.</strong></p>
<p>(Photo: A New York City cab seen from the edge of Central Park. 7 March 2007. By Isabelle Roughol)</p>
<p><a id="aptureLink_PSXRBdgAH3" style="margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; text-align: center; display: block; padding-top: 0px; padding-right: 6px; padding-bottom: 0px; padding-left: 6px; " href="http://www.scribd.com/doc/19849632"><img style="border: 0px initial initial;" title="Page 1, Natural gas" src="http://placeholder.apture.com/ph/660x390_ScribdItem/" alt="" width="575px" height="360px" /></a></p>
<p>By ISABELLE ROUGHOL<br />
Columbia Missourian</p>
<p>MU physics professor Peter Pfeifer has been buying ground corncob by the pound as part of a research project that could put a natural-gas tank in many American cars in the next five years.</p>
<p>Pfeifer and his team heat the ground cobs at high temperatures in an oxygen-free atmosphere to reduce them to carbon, which is then pressed into round one-inch thick briquettes.</p>
<p>“It’s almost like charcoal that you put on your Fourth of July barbecue,” Pfeifer said. “Some people call them the Missouri hockey pucks.”</p>
<p>Then 216 carbon briquettes are placed into aluminum tubes. To the untrained eye, it seems they are taking up space but in fact, the carbon provides greater storage capacity for natural gas than an empty tank.</p>
<p>Natural gas is cheaper and cleaner-burning than gasoline. The equivalent in natural gas of one gallon of unleaded gasoline costs $1.40 — or the price of about a half gallon of gas . Burning natural gas produces fewer greenhouse gas emissions, and it produces virtually no exhaust. Natural gas is also easier to procure: 85 percent of the current U.S. consumption is produced domestically, according to the U.S. Department of Energy, and most of the rest comes from Canada.</p>
<p>“If it’s such a winning proposition, why aren’t you and I using such cars?” Pfeifer said.</p>
<p>The answer is that while automobile engines can burn natural gas without modification, doing so would require a different kind of fuel tank. Storing natural gas requires heavy steel high-pressure cylinders that are expensive and impractical for use in automobiles.<br />
“You have to give up your trunk space or passenger space,” Pfeifer said.</p>
<p>Only six stations sell natural gas in Missouri, and four of them only sell to local governments who use natural gas vehicles, or NGVs, for public transportation and other government functions. Gas stations resist offering natural gas because of the high cost of storing and distributing it and because there are very few NGVs on the market today.<br />
Kansas City has a central fleet of 218 NGVs. Next month, a team from the Midwest Research Institute led by Phil Buckley, who works with Pfeifer, will mount a prototype low-pressure tank on a pickup truck owned by the city. If the experiment works, Pfeifer and his team will have overcome the biggest obstacle to a wider use of NGVs. They could also help convince the automotive industry to begin building cars and trucks that burn natural gas.</p>
<p>“If we get an investor interested in this technology, it could be revolutionary,” said Sam Swearngin, fleet superintendent in Kansas City.</p>
<p>Pfeifer’s coworkers in MU’s department of physics jokingly call him a “fractalist.” A floor-to-ceiling bookshelf in his office is dedicated to the topic of fractals, his life’s work. Fractals are objects in which a pattern is constantly repeated so that no matter the scale, the object always looks the same. Think cauliflower: A head of the vegetable looks like one of the flowers, which is composed of smaller flowers, and so on.</p>
<p>“As you zoom in, the substructure looks like the whole,” Pfeifer said.</p>
<p>Cumulus clouds and human lungs are fractals. So are the pores inside the carbon that is produced by charring the ground corn cobs.</p>
<p>These microscopic cavities in the carbon, “nanopores,” hold the natural gas — 95 percent of which is methane.</p>
<p>“Those pores are almost like a sponge, they suck up the methane,” Pfeifer said. “In this carbon, the methane, at a much lower pressure, is held at almost the same density as it would be in big cylinder tanks.”</p>
<p>Because the pressure is low, 500 pounds per square inch instead of 3,600, the tank can be made flat and rectangular, allowing it to be attached to a car like a regular gasoline tank. Until Pfeifer’s work, that was considered impossible for a natural gas tank because a rectangular shape is less resistant to high pressure.</p>
<p>“At high pressure, this would blow up in your face,” Pfeifer said.</p>
<p>The carbon system could also be used to capture the methane that emanates from landfills and transport it to central processing facilities, thus transforming a pollutant — methane is a greenhouse gas four times more potent than carbon dioxide — into a renewable energy.</p>
<p>If it becomes a reality, Pfeifer’s tank could be another energy-related benefit for the region. Corn farmers already stand to gain from the increasing use of ethanol, and one added advantage of Pfeifer’s tank is that it relies on a waste product that is cheap and abundant.</p>
<p>Pfeifer said he hopes his invention will spark the interest of carmakers, with whom he is seeking partnerships. His grant from the National Science Foundation is running out, but Pfeifer said he hopes it will be renewed. He said he is also hoping the U.S. Department of Energy wil l help fund his research, which is why he is working on applying it to hydrogen, another potential alternative fuel source that has been drawing more attention than natural gas.</p>
<p>Pfeifer said he approves of hydrogen and biofuels initiatives, but does not think they can meet the country’s immediate energy needs.</p>
<p>“It’s misleading to believe that this will solve our large-scale problems,” he said. “Hydrogen will not be with us until the year 2020. If (natural gas) became a national goal, we could do this in two or three years.”</p>
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