Monday, 19 August 2013

Food for thought

August 19, 2013

 

At €2,50,000, the burger produced recently using meat cultured in a lab is probably the world’s most expensive sandwich. But it marks a major milestone in the long pursuit by a few scientists to grow meat in vitro . The small piece of meat containing 20,000 strips of muscle tissue, each one mm thick by 2.5 cm long, is a proof of concept that culturing meat in a petri dish is indeed scientifically possible. The starting material for the lab-made meat is a kind of adult stem cell harvested from the muscles of cattle. Unlike embryonic stem cells that need to be coaxed to become cells of a certain kind, adult stem cells are preprogrammed to produce specialised cells — muscle cells in this case. But the downside is that adult stem cells cannot replicate endlessly like their embryonic counterparts. Having proved the science, commercial production of meat would become a reality only if scientists solve a few major problems. The most challenging is finding a truly cheap, efficient, animal-free media in which the stem cells can be grown. The foetal calf serum media currently used come from slaughtered animals. Aside from the source of the nutrient broth, the fact that it also contains antibiotics and anti-fungal agents almost rules out this serum as a likely candidate when mass production becomes a reality. Animal-free media are commercially available, but are equally expensive. As a December 2010 paper in Nature points out, the nutrient media make up for about 90 per cent of the material cost of in vitro meat.

It may take a few decades for the technology to reach the stage where meat grown in customised bioreactors becomes available in supermarkets at a competitive price. But there is a clear need for such meat. Besides saving more than 42 million cattle from being butchered every year in the U.S. alone, the huge environmental gain that would accrue cannot be dismissed lightly. According to a 2006 Food and Agriculture Organization report, livestock raised specifically for meat release 18 per cent of greenhouse gas emissions; about 30 per cent of land is used for grazing and growing animal feed. The quantum of antibiotics used in livestock is one of the main reasons for the rise in drug-resistant bacteria. It would also minimise many viral strains from jumping from animals to humans. But logic alone will not help the cause. There is a need to make the product quite comparable in taste, texture and nutrient content to find more takers. Such hurdles can be overcome only if sustained funding is available. With the exception of the Dutch government, no country or major organisation has shown any inclination to fund this research. Hopefully, the latest demonstration may change all that.

Copyright© 2013, The Hindu

 

Scientists to cook world's first in-vitro beef burger

Reuters Aug 3, 2013, 01.23PM IST

LONDON: A corner of west London will see culinary and scientific history made on Monday when scientists cook and serve up the world's first lab-grown beef burger.

The in-vitro burger, cultured from cattle stem cells, the first example of what its creator says could provide an answer to global food shortages and help combat climate change, will be fried in a pan and tasted by two volunteers.

The burger is the result of years of research by Dutch scientist Mark Post, a vascular biologist at the University of Maastricht, who is working to show how meat grown in petri dishes might one day be a true alternative to meat from livestock.

The meat in the burger has been made by knitting together around 20,000 strands of protein that has been cultured from cattle stem cells in Post's lab.

The tissue is grown by placing the cells in a ring, like a donut, around a hub of nutrient gel, Post explained.

To prepare the burger, scientists combined the cultured beef with other ingredients normally used in burgers, such as salt, breadcrumbs and egg powder. Red beet juice and saffron have been added to bring out its natural colours.

"Our burger is made from muscle cells taken from a cow. We haven't altered them in any way," Post said in a statement on Friday. "For it to succeed it has to look, feel and hopefully taste like the real thing."

VIABLE ALTERNATIVE?

Success, in Post's view, would mean not just a tasty burger, but also the prospect of finding a sustainable, ethical and environmentally friendly alternative to meat production.

According to a 2006 report by the U.N. Food and Agriculture Organization (FAO), industrialized agriculture contributes on a "massive scale" to climate change, air pollution, land degradation, energy use, deforestation and biodiversity decline.

The report, entitled Livestock's Long Shadow, said the meat industry contributes about 18 percent of global greenhouse-gas emissions and this proportion is expected to grow as consumers in fast-developing countries such as China and India eat more meat.

According to the World Health Organization (WHO), annual meat production is projected to rise to 376 million tonnes by 2030 from 218 million tonnes in 1997-1999, and demand from a growing world population is expected to rise beyond that.

Post cites FAO figures suggesting demand for meat is expected to increase by more than two-thirds by 2050.

Animal welfare campaigners applauded the arrival of cultured meat and predicted a great future for it.

"In vitro technology will spell the end of lorries full of cows and chickens, abattoirs and factory farming," the People for the Ethical Treatment of Animals (PETA) campaign group said in a statement. "It will reduce carbon emissions, conserve water and make the food supply safer."

A study published in 2011 comparing the relative environmental impacts of various types of meat, including lamb, pork, beef and cultured meat, said the lab-grown product has by far the least impact on the environment.

Hanna Tuomisto, who conducted the study at Oxford University's Wildlife Conservation Research Unit, found that growing meats in-vitro would use 35 percent to 60 percent less energy, emit 80 percent to 95 percent less greenhouse gas and use around 98 percent less land than conventionally produced animal meat.

While Monday's fry-up will be a world first and only an initial proof-of concept, the Dutch scientist reckons commercial production of cultured beef could begin within the next 20 years.

"What we are going to attempt is important because I hope it will show cultured beef has the answers to major problems that the world faces," he added.

Turning out to be rocket science

August 19, 2013

Updated: August 19, 2013 20:22 IST

N. Gopal Raj

The GSLV retains the first two stages of its predecessor, the Polar Satellite Launch Vehicle (PSLV). In order to carry heavier satellites than the latter, the third stage of the GSLV uses cryogenic propulsion. File photo

The GSLV retains the first two stages of its predecessor, the Polar Satellite Launch Vehicle (PSLV). In order to carry heavier satellites than the latter, the third stage of the GSLV uses cryogenic propulsion. File photo

 

After years of effort and back-to-back failures, today’s GSLV launch is crucial to ISRO’s quest for an indigenous cryogenic engine

Once again, a Geosynchronous Satellite Launch Vehicle (GSLV) is on the launch pad at Sriharikota. This launch will be crucial — after two successive failures of the rocket, the Indian Space Research Organisation can ill afford one more troubled flight. Moreover, the space agency needs to demonstrate that, after 20 years of effort, it has now mastered cryogenic technology.

The GSLV retains the first two stages of its predecessor, the Polar Satellite Launch Vehicle (PSLV). In order to carry heavier satellites than the latter, the third stage of the GSLV uses cryogenic propulsion. Running on liquid hydrogen and liquid oxygen, a cryogenic engine offers greater energy efficiency than those that use other propellants. The improved efficiency means that the upper stage can carry less propellant, with the weight saved translating directly into more payload.

ISRO tried to purchase cryogenic technology from what was then the Soviet Union, but the deal that was signed in 1991 ran into trouble after the U.S. imposed sanctions. Russia, which inherited the deal after the breakup of the Soviet Union, backed out of providing the technology but agreed to supply seven flight-worthy stages for the GSLV. (For more details see “The long road to cryogenic technology,” The Hindu, April 15, 2010).

Left with no option, ISRO began the Cryogenic Upper Stage Project in April 1994 for developing an indigenous version of the Russian cryogenic engine and stage. While this technology development was in progress, it could fly the GSLV with Russian-made stages.

The GSLV, equipped with a Russian cryogenic stage, first flew in 2001. However, unlike the PSLV, which shook off the failure of its first launch and went on to notch up 23 consecutive successes, the GSLV has been trouble prone. In its seven flights so far, three were outright failures and another two suffered serious problems.

In April 2010, the GSLV flew for the first time with an indigenous cryogenic stage. Close to five minutes after lift-off, the cryogenic engine came to life but only very briefly. With thrust from that engine failing to pick up, the rocket soon tumbled into the sea.

In December the same year, the GSLV was flown again, this time with a Russian cryogenic stage. But disaster struck yet again, with the vehicle going out of control less than a minute into the flight, breaking up into pieces and exploding into flames over Sriharikota.

ISRO has gone to great lengths to learn from those failures and adopt suitable changes, say senior officials of the space agency.

The Russian cryogenic engine and stage design is complicated. Booster turbopumps installed at the bottom of the liquid hydrogen and liquid oxygen tanks maintain a steady flow of propellants to the main turbopump.

Glitch rectified

Analysis of the data radioed down by the rocket during its April 2010 flight showed that the booster turbopump supplying liquid hydrogen had caused the problem. The turbopump had started up normally and attained a maximum speed of 34,800 revolutions per minute. But its rotation slowed after less than one second and stopped soon afterwards.

A detailed review concluded that one of the pump’s seals could have gripped the rotating shaft as a result of thermal deformation or some tiny contaminant becoming wedged somewhere. Alternatively, the casing of the turbine that drives the pump could have ruptured.

The review led to a tightening of manufacturing tolerances for the booster turbopump’s parts as well as more stringent procedures for its assembly. Extensive testing has also been introduced, including of the fully-assembled turbopumps.

The starting sequence for a cryogenic engine is a complex process, involving split-second timing. The cryogenic engine as well as the stage’s two small steering engines were tested briefly under simulated high-altitude conditions at ISRO’s Mahendragiri facility in Tamil Nadu to ensure that their ignition went smoothly.

In the GSLV’s December 2010 flight, a shroud, which protects the cryogenic engine during atmospheric flight, opened up as the rocket accelerated to supersonic speeds. In the process, it pulled apart connectors for electrical cables carrying control signals from onboard computers mounted near the top of the rocket to the rest of the vehicle. Out of control, the vehicle turned sharply and soon broke up. The shroud has now been strengthened and the connector mounting modified.

In its forthcoming mission, the GSLV is carrying GSAT-14, a communication satellite weighing close to two tonnes.

The rocket could launch seven more spacecraft over the next four years, according to ISRO Chairman K. Radhakrishnan. This could include four communication satellites, a meteorological satellite identical to the Insat-3D that was launched last month on Europe’s Ariane 5 rocket, the GISAT remote sensing satellite as well as Chandrayaan-2, the country’s next lunar exploration mission.

The cost of launching Insat-3D on Ariane 5, not including insurance, came to $82 million (Rs.490 crore), Dr. Radhakrishnan told this correspondent. The ‘marginal cost’ of each GSLV — that is, the additional expense the space agency incurs on the launch vehicle but which does not include all the organisational costs and investments for supporting the mission — came to about Rs.200 crore.

However, the current version of the GSLV will probably not be able to carry communication satellites weighing more than about 2.2 tonnes. ISRO has already launched several considerably heavier communication satellites aboard Ariane rockets. The Department of Space’s latest annual report shows eight more communication satellites being launched abroad over the next four years, including the GSAT-7 that will fly on the Ariane 5 later this month.

ISRO is in the process of developing a more powerful rocket, the GSLV Mark-III, that will be capable of carrying four-tonne-class communication satellites. The rocket’s giant solid propellant booster and its big liquid propellant stage have already been successfully tested on the ground. But an entirely new cryogenic engine and stage have also to be prepared.

Test firing of the GSLV Mark-III’s cryogenic engine would start soon and the intention was to have the entire vehicle ready for its first developmental flight by 2016-17, according to the ISRO chairman.

gopal.raj@thehindu.co.in

The graphic that accompanied this article has been removed as it had some factual errors.

Keywords: Geosynchronous Satellite Launch Vehicle, GSLV, Polar Satellite Launch Vehicle, PSLV, GSLV Mark-III’s cryogenic engine, GSAT-14, communication satellite, ISRO

 

ISRO aborts GSLV-D5 launch after fuel leak

 

SRIHARIKOTA, August 19, 2013

Updated: August 19, 2013 20:22 IST

M. Dinesh Varma

ISRO Chairman K. Radhakrishnan (Right) addressing the media after calling off GSLV-D5 launch. Photo: V. Ganesan

  • The Hindu ISRO Chairman K. Radhakrishnan (Right) addressing the media after calling off GSLV-D5 launch. Photo: V. Ganesan

  • File photo shows the fully integrated, three-stage GSLV-F06 at the second launch at Sriharikota. The proposed launch of GSLV D5 was put off following fuel leak. Photo: ISRO.

    File photo shows the fully integrated, three-stage GSLV-F06 at the second launch at Sriharikota. The proposed launch of GSLV D5 was put off following fuel leak. Photo: ISRO.

  • The launch of GSLV D5 has been put off following fuel leak. A file photo shows GSLV D3 is seen on the launch pad at Sriharikota. A file Photo: V. Ganesan.

    The launch of GSLV D5 has been put off following fuel leak. A file photo shows GSLV D3 is seen on the launch pad at Sriharikota. A file Photo: V. Ganesan.

Following the detection of a fuel leakage barely an hour from lift-off, the Indian Space Research Organisation (ISRO) aborted its Geosynchronous Satellite Launch Vehicle (GSLV), the GSLV-D5 mission that was to place in orbit the advanced communication satellite GSAT-14, from the Sriharikota spaceport.

The leakage was reportedly noticed during the loading of liquid propellants for the second stage. The 49-metre tall GSLV-D5 adopts a three-stage fuel cycle---the core solid stage, four liquid propellant strap-ons and second stage and a cryogenic upper stage.

This is the third straight time that the ISRO is being caught up in a cryogenic nemesis with its previous two GSLV missions with a home-wired cryogenic upper stage -- in April and December 2010 -- ending in failure.

"The countdown was progressing well, but about two before lift-off, we observed a leak in the fuel systems. Because of this, we are calling off the launch," ISRO Chairman K. Radhakrishnan later told a press conference.

A new date, Dr. Radhakrishnan said, would be finalised only after the ISRO team undertook a detailed assessment to identify the cause of the leak and the actions that need to be taken.

The immediate task of the ISRO team was to drain out the liquid propellants that was loaded for the second stage and the four liquid L40 strap-ons of the rocket. The GSLV-D5 has been hauled back to Vehicle Assembly Building.

Keywords: ISRO, GSLV mission, Launch, Fuel leak

Copyright© 2013, The Hindu

Tuesday, 13 August 2013

In rare condition, Tamil Nadu infant keeps catching fire

Saradha Mohan Kumar, TNN | Aug 10, 2013, 12.57 AM IST


In rare condition, Tamil Nadu infant keeps catching fire

The paediatrician treating Rahul, said the baby emitted some highly combustible gas through the pores of his skin, which made him catch fire.

CHENNAI: Rahul has been virtually in flames four times since he was born two-and-a-half months ago. Doctors say it's due to a rare condition called spontaneous human combustion (SHC).

Afflicted with the disorder, seen only in 200 people across the world in the past 300 years, the child is undergoing treatment at Kilpauk Medical College (KMC) Hospital.
Rahul was nine days old when he first "caught fire" in the presence of his mother Rajeshwari who watched in disbelief as there was no source of fire in the vicinity. She took him to the Villupuram Medical College from where the baby was discharged three days later. After coming home, he suffered burns again. "Doctors say he is a healthy child and his organs are fine. The last time he caught fire was a fortnight ago, and this time it was head to toe," said Rajeshwari who hails from a village near Tindivanam.
Paediatrician Dr Narayana Babu, who is treating Rahul, said the baby emitted some highly combustible gas through the pores of his skin, which made him catch fire. "We have not identified the gas yet," said Dr Babu.

The case has stunned doctors in the city. There are many theories about the poorly understood condition, ranging from high acetone content in the body to the paranormal. Some doctors say everyone has certain amount of alcohol present in their blood and when its content is high, it combines with the gases in the body; resulting in burns.
"More than 20 years ago, we saw a similar case of a 23-year-old man, but it went undocumented," said Dr Jayaraman, former head of the burns unit in KMC. "Several theories of SHC do the rounds but they are very vague and not backed by scientific proof. Though there is no special cure for the condition, it can be treated like a regular burn injury," he said.

Dr Kalpesh Gajiwala, a burns specialist at the Tata Memorial Hospital in Mumbai, said it was surprising that it happened to a child in a village, where children are usually breastfed and breast milk, would rarely ever be converted to methane. "A plausible hypothesis for SHC is that some bacteria, such as the methanogenic micro-organism-archaebacteria, in the intestine convert the food into methane, which is a combustible substance," said Dr Gajiwala.

A small spark, which need not be an obvious one, anywhere nearby, can trigger the fire, said the doctor. "Let us say if the child is covered with a silk cloth which can generate static electricity, the combustible gas and the electricity can cause fire," he said.
"The boy should not be near inflammable substances. It's better if he is kept in a cold place," said Dr Babu.

Human torch mystery: Doctors expect test results today
TNN Aug 12, 2013, 03.42AM IST


CHENNAI: Doctors treating Rahul, a two-and-half-month-old boy who has caught fire on his own, are expecting test results on Monday that may reveal how and why the baby went up in flames.

A native of a village near Tindivanam, Rahul has been undergoing treatment at Kilpauk Medical College and Hospital since Friday. He has caught fire four times since he was born. Doctors are debating the possibility of spontaneous human combustion (SHC). It is a rare condition in which a person could catch fire due to the emission of highly inflammable substances through the body.

"SHC is a hoax theory. A baby catching fire spontaneously is not possible," said burns specialist at KMC Dr J Jagan Mohan. "Alcoholics have a very small percentage of alcohol secreted in their sweat but even that wouldn't generate a fire."
Doctors had recommended a series of sweat, urine and blood tests to check whether Rahul has inflammable substance in his samples.

Head of department of paediatrics Dr Narayana Babu told TOI on Sunday that the child's internal organs were normal and there were no indications of fractures. "We're exploring all possibilities, including a case of abuse. The baby's organs are functioning normally and he is stable now," said Dr Babu.

Most of Rahul's burn injuries have healed but he has scars on his head, hands, stomach and legs after he caught fire a month ago. "The baby doesn't have any scars or burn injuries on his back. This could be because he was lying on his back and there was no air contact to cause a fire," said the doctor.

‘Human torch’ baby tests normal, doctors stumped
TNN | Aug 13, 2013, 04.13 AM IST
CHENNAI/PUDUCHERRY: Is a 50-day-old boy from a village in Tamil Nadu a 21st century victim of a phenomenon widely accepted in the 1800s but since dismissed by experts?
Adding to the medical mystery that doctors confront with Rahul, whose parents claim has suddenly "caught fire" at least four times since he was born, results of preliminary tests released on Monday showed no abnormality — or any reason for the child to suffer from recurring bouts of spontaneous combustion.

Doctors at Kilpauk Medical College and Hospital, who are treating the child, conducted a series of tests to check Rahul's vital functions. "We received some of the test results and the baby's liver and kidneys seem to be fine. X-ray results show no damage to his bones," said paediatrician Dr Narayana Babu.

The baby's blood, urine and sweat samples are also being analysed to check for any toxic substance, Dr Babu said. "We'll get the results from a chromosome test by the end of the week," he added.

Rahul, of T Parangani in Villupuram district, has been undergoing treatment at the hospital in Chennai since Friday. Reports of his condition have generated a debate among doctors on spontaneous human combustion, with some stating that it is a possibility and others completely rejecting the theory.

Superstitious residents of the village where the family lives believe that the baby is possessed by evil spirits. A group of residents of T Parangani had directed the baby's parents, P Karna and Rajeshwari, to leave the village and stay in a temple till the baby is "cured". Rajeshwari took Rahul to a temple in a nearby hamlet, Brammadesam, on August 5 and stayed there till officials in the district decided to move the baby to Chennai for better medical care.

Rahul's grandfather, V Perumal, 75, said his son and daughter-in-law, both manual workers, came to the village with the baby in the third week of July.
"My son said the baby caught fire twice when they were staying with Rajeshwari's parents," Perumal said. "I used to stay awake till 4am looking after the baby and then my wife would wake up and take over. One night, within three days of their visit, we heard the baby scream and we found a sheet near the baby on fire. Fire soon engulfed the baby's head and neck. We doused it with water."

Perumal's wife Ponamma said their hut caught fire on July 30, making the villagers panic. "The villagers asked the parents to take the baby to a temple. None of the villagers gave us accommodation. We spent that night in the rain as the thatched roof was gutted," Ponamma said.

The elderly couple denied charges of child abuse. "How could we torture our grandson?" Ponamma asked. "The baby's parents too would not do him any harm." Police said they did not receive any complaint of child abuse. "We have not received any complaints or direction from the government to probe whether it is a case of child abuse," said Villupuram superintendent of police S Manoharan.

Rare medical condition sets Chennai baby afire repeatedly
CHENNAI, August 10, 2013
Updated: August 11, 2013 10:37 IST


Three-month-old has gone up in flames four times so far; under treatment for extensive burn injures

Rajeswari’s joy knew no bounds when she gave birth to a healthy boy. Nine days later, she found him on fire, literally, and scampered to douse the flames.

“People thought I set him on fire deliberately,” says Rajeswari, who hails from Nedimoliyur, a hamlet in Villupuram.

The baby went on to suffer three more similar accidents following which the village community ostracised Rajeswari and her family.

The child, Rahul, now three months old, is currently at the Kilpauk Medical College Hospital (KMC) and is being treated for extensive burn injuries.

He suffers from an extremely rare condition called spontaneous human combustion, doctors at KMC say. R. Narayana Babu, head of paediatrics at KMC, says the baby was referred to the hospital by the Villupuram collector.

“The dean got a call from the collector and the child came to us on Thursday evening. We researched online and found that over the past 300 years, 200 such cases were reported. The last reported case was of a 73-year-old man who died in his sleep, after going up in flames, in Wales, England, in 1995,” he says.

In the paediatric intensive care unit where Rahul is admitted, the authorities have placed a bucket of water and a fire extinguisher near the baby’s bed to tackle any emergency.
Terming it a ‘rarest of rare occurrence,’ Dr. Babu says, “It has been scientifically documented that concentrated combustion air excreted from the body could result in such episodes. In elderly persons, heavy drinking could lead to the body excreting alcohol-like substance which could get ignited.”

Rahul is now being treated with external application of ointment for his burns. On Friday morning, the head of plastic surgery at KMCH, J. Jaganmohan, examined him.

Doctors say the parents will be trained to take care to prevent exposing the child to situations that could cause him to go up in flames. “We have to teach them to avoid sending the child out in the sun and specify the kinds of clothes he can wear when he grows up,” Dr. Babu says.

Rajeswari’s husband Karna is an agricultural labourer in a village near Puducherry. The couple also have a two-year-old daughter who is now in the care of Karna’s father.
Keywords: spontaneous human combustion, rare medical condition in infant

We didn't start the fire

August 12, 2013
Updated: August 13, 2013 16:21 IST

Ramya Kannan

Fire! Fire! Understanding Spontaneous Human Combustion is not easy. Image by Gerd Altmanm, via Pixabay, under Creative Commons.


The recent case of a baby bursting into flames spontaneously has evoked the term Spontaneous Human Combustion in our midst. Is there a science behind it, or is it just the poltergeist?


Baby on fire

Rahul was nine days old when his mother says he first caught fire. Yes, just like that, out of the blue, flames on the little baby's body. The baby's mother Rajeswari said so.
She also said that subsequenty the baby had spontaneously set himself ablaze three other times, and he had to be doused out. Three months later, they brought the baby to Kilpauk Medical Hospital, Chennai. As the baby slept, in his nappy, an IV line going through his slender wrist, the evidence of those burns were apparent. The kind of burns that make you flinch.

Conspiracy theories abound

The family comes from a remote village in Villupuram district, Tamil Nadu. A village where they say huts caught fire inexplicably, suddently, without apparent provocation. Turns out later that arsonists mixed phosphorous in wet cow dung and when the dung dried up, the phosphorus caught fire. When a baby seemed to burst out in flames all by himself, the villagers grew suspicious. How could such a thing happen? They began with evil spirits and finally reasoned that it must be the parents: they were arsonists. And they set their baby afire.

> > Human beings are made that way: the worse specimens tend to abuse children; they hurl accusations without basis, they inovke spirits, and they hang people without a trial. But what does not make sense is why a family wanting to kill a boy baby (in a country where the arrival of a boy is celebrated) will douse the flames after first setting the child on fire.

The mother is perplexed by these conspiracy theories that ricochet off her frequently. But what really bothers her is her young son busting into flames: naturally, it scares her.
Voila! Spontaneous Human Combustion

In the absence of any evidence to show the contrary, the good doctors browsed the Web long and hard, first concluded that Baby Rahul was probably a classic spontaneous human combustion (SHC).

Before we go on to science let's just bust one more conspiracy theory that had been floating around: The mother was doing it deliberately for publicity. Which would make sense if she was aware of SHC, as a concept. Now, Rajeswari is unlettered, or barely literate. If we presume that she had apriori knowledge of spontaneous human combustion, then we might as well ask her to explain the science behind it, instead of the doctors who have their knickers in a twist, trying to figure out whoddunit.

Meanwhile, they have arrived at a simplistic answer: child abuse. The logic being the child was not burnt on his back, but only on the front of his torso, the chest and abdomen, besides the head. Since an infant, 3 months old or less, spends all the time on the back, it's not surprising the baby has an unscathed back. So, pfffft to your easy-way-out child abuse theory. Bust, in my opinion, again.

Science, Lies and much fumbling

And, now science. Or is it science.

Spontaneous Human Combustion actually doesn't explain much - it just confesses man's ignorance at what happens; etiology unknown; cause unclear. When there is no known external source of ignition for a human body catching fire, we say SHC.
Let's see if we can get at this working from the basics.

Starting a fire

So, how do we start a fire? You need oxygen, heat and fuel?

Oxygen, there is plenty of where we live; the body generates heat, we know, and as for fuel, all that flesh and fat must count for something. And yet, we don't all burst into flame.
Those studying SCH do so with skepticism, because they are only defining it as the indefinable. That's hardly a definition. We're not talking mysticism here, we're talking science, and science is in the business of providing plausible explanations.

Often explanations are based on hypotheses. So the scientists work backwards to construct a plausible tale that would explain Spontaneous Human Combustion.
Science.howstuffworks.com threshes all the reasons out in a pretty kicking-the-derriere manner. Here goes:
1.Methane, a highly inflammable gas, is being generated in the intestines. Possible, the intestines have to process a lot of crap. And that they are set ablaze by enzymes within the body. Which means combustion, which is how a car engine burns fuel to move, say, happens inside the body. Except, since there is more external damage than to the internal organs, the authors don't think much of this.

2.Buildup of static electricity inside the body or from an external geomagnetic force exerted on the body. The authors quote Larry Arnold, a self-proclaimed expert on spontaneous human combustion, who suggested that the phenomenon is the work of a new subatomic particle called a pyroton, which interacts with cells to cause a mini explosion. But the pyroton had not showed itself so far.

There go two plausible theories. Felled by logic.

The ingiting spark

So let us suppose there are igniting factors in the form of sparks in a room that is electrified. And that the person who will combust shortly might have on his or her person something eminently combustible: clothing. The infinitesimal sparks fall on the material that immediately catches fire, flames break out and burns ensue in a manner that is predictable in cases of SHC: the torso and head are burnt.

Again we must ask. Certainly, there are a number of people wearing clothing living in rooms with electrical fittings, but it doesn't happen to all.They walk around with mobile phones, tablets, all of which require some form of electrical charge to live. The spark could equally come from any source of fire in the room: lighted candles, incense sticks, smouldering cigarette butts.

Going back to Rahul, the 201st reported case of SHC in 300 years, any of those trigger factors could have been present, in fact, all of them. And an infant is mostly swaddled in soft cotton in this part of the country. Cotton, by the way, is perfect combustible material- it ignites fast and burns even faster.

A baby, at that age, as we have already said, is prone and pretty immobile unless carried, so that might explain the rather ghastly burns, in classic SHC patterns on the torso and head.

But if all these factors existed, there is enough reason to believe that others in the household were/are dressed similarly, and are exposed to the same igniting spores. None of them caught fire: Not Rajeswari, not her husband Karna and not even their first born, a daughter.

And thus we come back to SHC, the non definition. Meanwhile, the doctors have sent samples of the baby's blood and sweat for testing. Metabolic and functional anomalies will shine through the test tube and stained slide, they hope. And, explain why Baby Rahul tends to light up without obvious provocation. Perhaps arson experts and those advancing the SHC theory globally could take a look at this case. Perhaps, Rahul can provide the elusive explanation.

While we are at it, will do us good to remember that Rahul's still a babe in arms, not a lab rat. Let's be excited by the challenging possibilities of finding an answer, but let's not forget that the living baby needs to be accorded dignity too.

Until we know more, however, there is always Billy Joel. We do know,
"We didn't start the fire; it was always burning; since the world's been turning. We didn't start the fire; no we didn't light it; But we tried to fight it."

Keywords: spontaneous human combustion, SHC, baby, bursting into flames, science, medicine, theory

Nip this in the bud

August 12, 2013

Aruna Rodrigues

 

Genetically modified crops, whose ecological effects are irreversible, could become a mainstay of Indian agriculture thanks to collusion between the government and the biotech industry

The final report of the Supreme Court-appointed Technical Expert Committee (TEC) on field trials of genetically modified crops is packed with revelations on what is wrong with institutional governance and regulation in India when it comes to GMOs (genetically-modified organisms). The report’s release late last month came days before biotech giant Monsanto decided not to submit any further applications for GMOs to the European Union; a decision forced by non-acceptance on scientific grounds and rejection by civil society.

Remarkable consensus

The TEC Final Report (FR) is the fourth official report which exposes the lack of integrity, independence and scientific expertise in assessing GMO risk. It is the third official report barring GM crops or their field trials singularly or collectively. This consensus is remarkable, given the regulatory oversight and fraud that otherwise dog our agri-institutions. The pervasive conflict of interest embedded in those bodies makes sound and rigorous regulation of GMOs all but impossible.

The four reports are: The ‘Jairam Ramesh Report’ of February 2010, imposing an indefinite moratorium on Bt Brinjal, overturning the apex Regulator’s approval to commercialise it; the Sopory Committee Report (August 2012); the Parliamentary Standing Committee (PSC) Report on GM crops (August 2012) and now the TEC Final Report (June-July 2013). The TEC recommends that in general, there should be an indefinite stoppage of all open field trials (environmental release) of GM crops, conditional on systemic corrections, including comprehensive and rigorous risk assessment protocols. The report includes a specific focus on Bt food crops.

It also calls for a ban on the environmental release of any GMO where India is the centre of origin or diversity. It also says herbicide tolerant (HT) crops, targeted for introduction by the regulator, should not be open field-tested. The TEC “finds them completely unsuitable in the Indian context as HT crops are likely to exert a highly adverse impact over time on sustainable agriculture, rural livelihoods, and environment.”

The PSC report which preceded that of the TEC was no less scathing: it was “ [...] convinced that these developments are not merely slippages due to oversight or human error but indicative of collusion of a worst kind [...] field trials under any garb should be discontinued forthwith”.

Sound science and factual data form the basis of the TEC decisions. There is practical and ethical sense too. The TEC insists that the government bring in independence, scientific expertise, transparency, rigour and participative democracy into GMO regulation and policy. The accent is on bio-safety.

Assessment and performance

GMOs produce “unintended effects” that are not immediately apparent and may take years to detect. This is a laboratory-based, potent technology, described by WHO as “unnatural.” The risk assessment (RA) protocols for GMOs are an evolving process to be performed by qualified and experienced experts who must be responsive to the latest scientific knowledge. The fact is that GMOs involve us in a big experiment in the idea that human agencies can perform adequate risk assessment, which, it is expected, will deliver safety at every level/dimension of their impact on us — the environment, farming systems, preservation of biodiversity, human and animal safety.

After 20 years since the first GM crop was commercialised in the U.S., there is increasing evidence, not less, of the health and environment risks from these crops. Furthermore, we now have 20 years of crop statistics from the U.S., of two kinds of crops that currently make up over 95 per cent of all GM crops cultivated globally, (like Bt cotton) Bt and HT crops. The statistics demonstrate declining yields. GM yields are significantly lower than yields from non-GM crops. Pesticide use, the great “industry” claim on these GM crops, instead of coming down, has gone up exponentially. In India, notwithstanding the hype of the industry, the regulators and the Ministry of Agriculture (MoA), Bt cotton yield is levelling off to levels barely higher than they were before the introduction of Bt.

It takes roughly $150 million to produce a GMO against $1 million through conventional breeding techniques. So where is the advantage and why are we experimenting given all the attendant risks? We have hard evidence from every U.N. study and particularly the World Bank-funded International Assessment of Agricultural Knowledge and Science for Development Report, which India signed in 2008. The IAASTD was the work of over 400 scientists and took four years to complete. It was twice peer reviewed. The report states we must look to small-holder, traditional farming to deliver food security in third world countries through agri-ecological systems which are sustainable. Governments must invest in these systems. This is the clear evidence.

Conflict of interest

The response to the TEC Final Report came immediately, with the Ministry of Agriculture strongly opposing the report. The MoA is a vendor of GM crops and has no mandate for regulating GMOs. The same Ministry had lobbied and fought to include an additional member on the TEC after its interim report had been submitted. That ‘new’ member came in with several conflicts of interest, his links to the GM crops lobby being widely known. His entry was in fact a breach of the Supreme Court’s mandate for an independent TEC and provoked me to file an affidavit in the court, drawing attention to this. Oddly enough, he did not sign the final report, or even put up a note of dissent. This allowed the final report, then, to be unanimous; as indeed was the TEC’s Interim Report submitted by the original five members.

The Indian Council of Agriculture Research (ICAR) promotes PPPs (Public-Private-Partnerships) with the biotechnology industry. It does this with the active backing of the Ministry of Science and Technology. The MoA has handed Monsanto and the industry access to our agri-research public institutions placing them in a position to seriously influence agri-policy in India. You cannot have a conflict of interest larger or more alarming than this one. Today, Monsanto decides which Bt cotton hybrids are planted — and where. Monsanto owns over 90 per cent of planted cotton seed, all of it Bt cotton.

All the other staggering scams rocking the nation do have the possibility of recovery and reversal. The GM scam will be of a scale hitherto unknown. It will also not be reversible because environmental contamination over time will be indelible. We have had the National Academies of Science give a clean chit of biosafety to GM crops — doing that by using paragraphs lifted wholesale from the industry’s own literature! Likewise, Ministers in the PMO who know nothing about the risks of GMOs have similarly sung the virtues of Bt Brinjal and its safety to an erstwhile Minister of Health. They have used, literally, “cut & paste” evidence from the biotech lobby’s “puff” material. Are these officials then, “un-caged corporate parrots?”

Along with the GM-vendor Ministries of Agriculture and Science & Technology, these are the expert inputs that the Prime Minister relies on when he pleads for “structured debate, analysis and enlightenment.” The worrying truth is that these values are absent in what emanates from either the PMO or the President.

Ministries, least of all “promoting” Ministries, should not have the authority to allow the novel technology of GMOs into Indian agriculture bypassing authentic democratic processes. Those processes require the widest possible — and transparent — consultation across India. With GMOs we must proceed carefully, always anchored in the principle of bio-safety. Science and technology may be mere informants into this process. After all, it is every woman, man and child, and our animals, an entire nation that will quite literally have to eat the outcome of a GM policy that delivers up our agriculture to it: if a GMO is unsafe, it will remain irreversibly unsafe. And it will remain in the environment and that is another dimension of impact.

(The author is the lead petitioner in the Supreme Court for a moratorium on GMOs and in which case the TEC was formed. She can be reached at:arunarod@gmail.com)

Copyright© 2013, The Hindu

Bt cotton replaces indigenous varieties in flag-making

BANGALORE, August 13, 2013

Sharath S. Srivatsa

 

‘Quality of cotton is determined by length, strength, appearance, Bt cotton has all these qualities’

The Indian flag made from organic cotton.

The Indian flag made from organic cotton.

The Indian tricolour may have lost its indigenous connection with the ‘desi’ cotton variety, with the use of Bt cotton — a proprietary technology of an American seed company.

Jayadhar, a popular variety of cotton grown in Karnataka that was also earlier used in making flags, has been replaced by Bt cotton.

Now, flag-making units at Bengeri in Hubli city and Garaga in Dharwad district, which meet the nationwide demand for the tricolour, have been using wholly or partly the khadi derived from Bt cotton.

“Quality of cotton is determined by length, strength and appearance, and Bt cotton provides all these qualities. The national flag needs to be stronger. We mainly process Bt cotton and buy other varieties if they are available,” an official at the Central Sliver Plant in Chitradurga said.

The staple in indigenous varieties is shorter than Bt cotton, the official explained on the choice of cotton.

The plant, a unit of the Khadi and Village Industries Commission, supplies about 1,000 kg cleaned (after a process called roving to remove dust particles and short fibres) cotton to Garaga Kshetriya Seva Sangh in Dharwad that till 2008 was the sole flag-making unit in the country. The cotton is then hand spun to yarn using a charaka and woven into khadi in handloom. However, sangha secretary Suresh V. Davande said that he was not aware of the Bt cotton being supplied.

“It is unfortunate that the cotton developed by an American company is being used to make the Indian flag” when there are many indigenous cotton varieties that were earlier used for flag making,” said Krishnaprasad of Sahaja Samruddha, which is trying to revive local cotton varieties.

GM Free India activists have urged the Prime Minister to hoist the flag made from organic cotton this Independence Day.

Copyright© 2013, The Hindu

Sunday, 11 August 2013

Higgs Boson may unravel dark energy mystery

Washington

Published: August 11, 2013 16:16 IST | Updated: August 11, 2013 16:16 IST

PTI

In this file photo, a view of the LHC (large hadron collider) in its tunnel at CERN is photographed, near Geneva.

AP In this file photo, a view of the LHC (large hadron collider) in its tunnel at CERN is photographed, near Geneva.

The recently discovered Higgs boson could provide a possible “portal” to physics that may help explain some of the attributes of the enigmatic dark energy, scientists suggest.

One of the biggest mysteries in contemporary particle physics and cosmology is why dark energy, which is observed to dominate energy density of the universe, has a remarkably small (but not zero) value, researchers said.

This value is so small, it is perhaps 120 orders of magnitude less than would be expected based on fundamental physics, they said.

Now, physicists -- Lawrence Krauss of Arizona State University and James Dent of the University of Louisiana-Lafayette -- explore how a possible small coupling between the Higgs particle, and possible new particles likely to be associated with what is conventionally called the Grand Unified Scale could result in the existence of another background field in nature in addition to the Higgs field.

This would contribute an energy density to empty space of precisely the correct scale to correspond to the observed energy density, researchers said.

Current observations of the universe show it is expanding at an accelerated rate. But this acceleration cannot be accounted for on the basis of matter alone, they said.

Putting energy in empty space produces a repulsive gravitational force opposing the attractive force produced by matter, including the dark matter that is inferred to dominate the mass of essentially all galaxies, but which doesn’t interact directly with light and, therefore, can only be estimated by its gravitational influence.

Because of this phenomenon and what is observed in the universe, it is thought that such ‘dark energy’ contributes up to 70 per cent of the total energy density in the universe, while observable matter contributes only 2 to 5 per cent, with the remaining 25 per cent or so coming from dark matter.

The source of this dark energy and the reason its magnitude matches the inferred magnitude of the energy in empty space is not currently understood, making it one of the leading outstanding problems in particle physics today.

“Now that the Higgs boson has been discovered, it provides a possible ‘portal’ to physics at much higher energy scales through very small possible mixings and couplings to new scalar fields which may operate at these scales,” said Krauss.

“We demonstrate that the simplest small mixing, related to the ratios of the scale at which electroweak physics operates, and a possible Grand Unified Scale, produces a possible contribution to the vacuum energy today of precisely the correct order of magnitude to account for the observed dark energy,” Krauss said.

The study was published in the journal Physical Review Letters.

Keywords: Higgs Boson, dark energy mystery, CERN, Arizona State University