Avian flu virus learns to fly without wings

Potentially fatal bird flu viruses can spread on the wind, a hitherto suspected but unproven route of transmission.

Usually, people catch bird flu through close physical contact with each other or, much more commonly, with infected poultry.

The newly identified capacity for wind to spread it opens up a potential route by which the viruses can spread between farms.

The finding came about after Dutch researchers studied an outbreak of the avian flu strain H7N7 in poultry on Dutch farms in 2003, which resulted in 89 confirmed human infections including one death.

Computer models showed that wind patterns at the time of the outbreak explain how different genetic variants of H7N7 ended up on different farms (Journal of Infectious Diseases, doi.org/j3b).

H5N1 is the most harmful strain of avian flu, having killed 360 of 610 infected people since it was discovered in 2003. The fact that a related strain can travel on the wind suggests that H5N1 can too, says Marion Koopmans of the Dutch National Institute for Public Health and the Environment in Bilthoven, who coordinated the research project. "You must assume that this same potential is there for H5N1," she says.

Other researchers agreed that by implication, H5N1 could spread in the same way. "Because we don't know, we should assume the worst case – and the worst case is that H5N1 travels on the wind as well," says John McCauley, a bird flu researcher at the MRC National Institute for Medical Research in London.

He says it's well known that the virus that causes foot and mouth disease in cattle and pigs travels many kilometres on the wind, but it's lighter than avian flu and is produced in huge amounts by infected animals. McCauley says the most likely scenario for bird flu is that the virus hitches a ride on airborne particles from farms, especially particles of infected faeces from poultry farms.

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ASEAN will continue to push for open skies agreement with India: PM Lee

SINGAPORE: Prime Minister Lee Hsien Loong said the issue of an open skies agreement between ASEAN and India is something which Singapore will continue to push for.

Speaking to the Singapore media at the end of his visit to New Delhi for the ASEAN-India commemorative summit, Mr Lee said passenger traffic keeps on growing, and hence the need for more capacity.

"I keep on making the point to them that if you want to engage Asia, if you want to engage ASEAN, this is really one of the easiest ways you can help to make it happen because if you open up the links, then the businessmen will travel, the tourists will travel, the business opportunities will be identified, more investments will come.

"I think the business people are quite persuaded but I think it's a subject we need to keep on pushing because some of the incumbent players, they prefer a slower pace. I hope there will be progress. The Singapore-India path we are discussing how to improve the air services agreement. The ASEAN-India air services agreement is something they have not started talking about, but we hope that they will begin soon," he shared.

Mr Lee concluded his trip to New Delhi with a visit to the Red Fort and he had the opportunity to meet the Singaporean team which took part in the ASEAN-India Car Rally.

The Prime Minister was encouraged by their participation, and it was also an opportunity for him to hear first-hand their experiences in driving 8,000 kilometres and through several states in ASEAN, before reaching New Delhi.

- CNA/ck

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iOS 6.0.2 triggering battery drain, say some users

The famed iPhone battery drain issue seems have to resurfaced for some people who've made the leap to
iOS 6.0.2.

Several users chiming in on Apple's Discussion Forums say the latest iOS update, which was designed to fix Wi-Fi problems, is draining their batteries faster.

One iOS 6.0.2 updater said that "I can usually get through a day with about 75 percent of my battery power remaining. Today I've gone through 90 percent and I've done nothing special with it."

Another said: "Today I barely used my phone at all, and I noticed I was down to 40 percent after 3 hours of being off the charger. This is a significant change in battery drain."

A third commented that "before with the 6.0.1 I didn't have any kind of problem with the battery, I could have my battery full charged without doing any use of the
iPhone 5 the whole night keeping 100 percent. But this morning when I woke up the battery was in 91 percent obviously without using the iPhone during the night."

Similar complaints have been shared with blog site MacNN, which pointed to Apple news site TidBITS for a theory behind the reported battery drain.

TidBITS authors Adam Engst and Michael Cohen speculate that the problem may be triggered by a change in the Wi-Fi behavior in iOS 6.0.2. Specifically, the new OS seems to have increased the number of Wi-Fi checks it performs in order to resolve the previous wireless connection issues, according to MacNN.

Reports of increased battery drain seem to be a common complaint each time a new version of iOS is released. But as usual, the problem this time is far from universal.

Some people commenting on the TidBITS story say they do find their battery draining faster, but others say they've seen no problem at all. The iOS 6.0.2 update was rolled out only to the iPhone 5 and
iPad Mini, which also limits the number of users potentially affected.

CNET contacted Apple for comment and will update the story if the company responds.

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Hollies Get Prickly for a Reason

With shiny evergreen leaves and bright red berries, holly trees are a naturally festive decoration seen throughout the Christmas season.

They're famously sharp. But not all holly leaves are prickly, even on the same tree. And scientists now think they know how the plants are able to make sharper leaves, seemingly at will. (Watch a video about how Christmas trees are made.)

A new study published in the Botanical Journal of the Linnean Society suggests leaf variations on a single tree are the combined result of animals browsing on them and the trees' swift molecular response to that sort of environmental pressure.

Carlos Herrera of the National Research Council of Spain led the study in southeastern Spain. He and his team investigated the European holly tree, Ilex aquifolium. Hollies, like other plants, can make different types of leaves at the same time. This is called heterophylly. Out of the 40 holly trees they studied, 39 trees displayed different kinds of leaves, both prickly and smooth.

Five holly leaves from the same tree.

Photographs by Emmanuel Lattes, Alamy

Some trees looked like they had been browsed upon by wild goats and deer. On those trees, the lower 8 feet (2.5 meters) had more prickly leaves, while higher up the leaves tended to be smooth. Scientists wanted to figure out how the holly trees could make the change in leaf shape so quickly.

All of the leaves on a tree are genetic twins and share exactly the same DNA sequence. By looking in the DNA for traces of a chemical process called methylation, which modifies DNA but doesn't alter the organism's genetic sequence, the team could determine whether leaf variation was a response to environmental or genetic changes. They found a relationship between recent browsing by animals, the growth of prickly leaves, and methylation.

"In holly, what we found is that the DNA of prickly leaves was significantly less methylated than prickless leaves, and from this we inferred that methylation changes are ultimately responsible for leaf shape changes," Herrera said. "The novelty of our study is that we show that these well-known changes in leaf type are associated with differences in DNA methylation patterns, that is, epigenetic changes that do not depend on variation in the sequence of DNA."

"Heterophylly is an obvious feature of a well-known species, and this has been ascribed to browsing. However, until now, no one has been able to come up with a mechanism for how this occurs," said Mike Fay, chief editor of the Botanical Journal of the Linnean Society and head of genetics at the Kew Royal Botanic Gardens. "With this new study, we are now one major step forward towards understanding how."

Epigenetic changes take place independently of variation in the genetic DNA sequence. (Read more about epigenetics in National Geographic magazine's "A Thing or Two About Twins.")

"This has clear and important implications for plant conservation," Herrera said. In natural populations that have their genetic variation depleted by habitat loss, the ability to respond quickly, without waiting for slower DNA changes, could help organisms survive accelerated environmental change. The plants' adaptability, he says, is an "optimistic note" amidst so many conservation concerns. (Related: "Wild Holly, Mistletoe, Spread With Warmer Winters.")

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NRA to Speak on Stopping Newtown Repeat

For the past week, leadership at the National Rifle Association has largely stayed away from the media, but this morning the group may weigh in on how to keep a deadly shooting massacre like last week's at a Newtown, Conn., elementary school from happening again.

The NRA will hold a news conference in Washington, D.C., just before 11 a.m.

Its leadership has held off on interviews this week after refusing to appear on Sunday morning public affairs shows this past weekend.

The group came under pressure after Adam Lanza, 20, killed 20 children and six adults before shooting himself at Sandy Hook Elementary School in Newtown last Friday.

"Out of respect for the families, and as a matter of common decency, we have given time for mourning, prayer and a full investigation of the facts before commenting," the group said in a press release Tuesday. "The NRA is prepared to offer meaningful contributions to help make sure this never happens again."

NRA News anchor Ginny Simone said Thursday that in the wake of the Sandy Hook shooting, membership surged "with an average of 8,000 new members a day."

New York City Mayor Michael Bloomberg has said the NRA is partially to blame for the tragedy.

"We're not trying to take away your right to advance the interests of gun owners, hunters, people who want to protect themselves," Bloomberg told "Nightline" anchor Cynthia McFadden in an interview Thursday. "But that's not an absolute right to encourage behavior which causes things like Connecticut. In fact, Connecticut is because of some of their actions."

Christian Gooden/St. Louis Post-Dispatch/AP Photo

President Obama Launches Gun-Violence Task Force Watch Video

President Obama on Gun Control: Ready to Act? Watch Video

Joe Biden to Lead Task Force to Prevent Gun Violence Watch Video

The guns used in the attack were legally purchased and owned by the shooter's mother, Nancy Lanza, who Adam Lanza shot to death before his assault on the school.

In the aftermath of the shooting, many, including Bloomberg, have called for stricter regulations on the type of weapons used in this and other instances of mass gun violence this year.

Sen. Dianne Feinstein, D-Calif., has said she intends to introduce a bill banning assault weapons on the first day of next year's Congress -- a step the president said he supports.

President Obama announced Wednesday that Vice President Joe Biden will head a task force of leaders from across the country that will evaluate the best solutions to reduce gun violence in the United States.

Obama said he will "use all the powers of this office to help advance efforts aimed at preventing more tragedies like this."

Mayors Against Illegal Guns, of which Mayor Bloomberg is co-chair, released a letter to President Obama signed by more than 750 mayors calling on him to produce a plan to "make it harder for dangerous people to possess guns."

The letter asked for mandatory background checks for gun buyers, a ban on high-capacity rifles and ammunition magazines, and a designation of gun trafficking as a federal crime.

ABC News' George Stephanopoulos looked at whether strict gun control laws like those that have worked for the United Kingdom and Japan could work for the U.S. on "Good Morning America" Thursday.

Others have argued that, rather than banning guns, the government should be arming teachers and administrators in schools so that they can defend students in the event of another school shooting.

While Michigan Gov. Rick Snyder vetoed a measure that would have let guns into schools on Tuesday, Texas Gov. Rick Perry and Virginia Gov. Bob McDonnell praised the idea.

Speaking on the NRA's daily news program Tuesday, Dave Koppel of the Independence Institute said the teachers at Sandy Hook should have had weapons.

"We'd certainly be talking about fewer innocent people and children dead," Koppel said.

While a national debate over the necessary solutions to prevent a tragedy of this nature from ever happening again wages on, Connecticut residents will have to wait "several months" before the final Connecticut State Police report on the Newtown shootings is complete.

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Fetal healing: Curing congenital diseases in the womb

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SGX consults markets on proposed rule changes

SINGAPORE: The Singapore Exchange (SGX) is consulting the securities and derivatives markets on proposed rule changes to provide market participants with more clarity of their rights and responsibilities.

The proposed rule changes are meant to clarify when settlement and other payments between the clearing house and clearing members become final.

SGX is proposing rule refinements to remove rules related to the trading, clearing or settlement of physical scrip in the securities market.

It is also seeking to formalise the practice of SGX members maintaining separate accounts for each customer.

This will help monitor risks associated with customers of SGX members.

The rule amendments are set out in two consultation papers and are available from Thursday at www.sgx.com

The SGX invites comments on the papers till 3 January 2013.

- CNA/xq

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Walmart selling $50 iTunes gift card for just $40

Holiday shoppers looking for a gift for their favorite Apple user can save $10 on an
iTunes gift card via Walmart.

The retail company is now offering a $50 electronic iTunes gift card for $40. That seems to be the only deal since Walmart is selling all other iTunes gift cards at their regular prices.

Buyers who opt for the deal receive an initial confirmation e-mail from Walmart and then a second e-mail with access to a PIN. After receiving the PIN, you can then send the card as a gift to your recipient. The turnaround seems to vary, however. Some buyers chiming in on the offer say they got the PIN e-mail within 15 minutes, while others said it took a couple of days.

One person who placed an order said the offer was limited to two cards per purchase. No expiration date was listed.

Walmart joins Best Buy in trimming prices on iTunes gift cards for holiday shoppers.

On Tuesday, Best Buy was selling a $100 iTunes gift card for $85, but that offer was good for just one day. And late last month, BB had offered 15 percent off all iTunes gift cards, a deal that has since expired.

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Detecting Rabid Bats Before They Bite

A picture is worth a thousand words—or in the case of bats, a rabies diagnosis. A new study reveals that rabid bats have cooler faces compared to uninfected colony-mates. And researchers are hopeful that thermal scans of bat faces could improve rabies surveillance in wild colonies, preventing outbreaks that introduce infections into other animals—including humans.

Bats are a major reservoir for the rabies virus, according to the Centers for Disease Control and Prevention (CDC) in Atlanta. Previous research shows that bats can transmit their strains to other animals, potentially putting people at risk. (Popular Videos: Bats share the screen with creepy co-stars.)

Rabies, typically transmitted in saliva, targets the brain and is almost always fatal in animals and people if left untreated. No current tests detect rabies in live animals—only brain tissue analysis is accurate.

Searching for a way to detect the virus in bats before the animals died, rabies specialist James Ellison and his colleagues at the CDC turned to a captive colony of big brown bats (Eptesicus fuscus). Previous studies had found temperature increases in the noses of rabid raccoons, so the team expected to see similar results with bats.

Researchers established normal temperature ranges for E. fuscus—the bat species most commonly sent for rabies testing—then injected 24 individuals with the virus. The 21-day study monitored facial temperatures with infrared cameras, and 13 of the 21 bats that developed rabies showed temperature drops of more than 4ºC.

"I was surprised to find the bats' faces were cooler because rabies causes inflammation—and that creates heat," said Ellison. "No one has done this before with bats," he added, and so researchers aren't sure what's causing the temperature changes they've discovered in the mammals. (Related: "Bats Have Superfast Muscles—A Mammal First.")

Although thermal scans didn't catch every instance of rabies in the colony, this method may be a way to detect the virus in bats before symptoms appear. The team plans to fine-tune their measurements of facial temperatures, and then Ellison hopes to try surveillance in the field.

This study was published online November 9 in Zoonoses and Public Health.

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Virginia Tech Survivor Fights Back Against Guns

Colin Goddard knows what it's like to be in a classroom when an armed man bursts through the door and starts randomly shooting people. Goddard was a student at Virginia Tech when a gunman shot him and killed 32 people in the deadliest mass shooting in U.S. history.

"It was the most terrifying nine minutes of my life," Goddard told Terry Moran of "Nightline" Wednesday.
"One moment you're conjugating French verbs, the next you're shot."

Four of Seung-Hui Cho's bullets hit Goddard April 16, 2007. Three of the bullets are still in him and serve as a constant reminder in his work with the Brady Campaign to Prevent Gun Violence.

Goddard does more than just lobby and appear in public-service announcements. He says he goes undercover to show how easy it is to buy guns without any background check. It's the subject of his documentary called "Living for 32," after the 32 people who died at Virginia Tech in Blacksburg.

"There is not one thing that will stop all shootings," Goddard said. "
There's not one policy that will save us all, but a background check is something that will make it more difficult for dangerous people to get their hands on a gun."

School Shooting Survivor Documents Gun Law Fight Watch Video

Virginia Tech Documentary Debuts at Sundance Watch Video

In "Living for 32," Goddard says he was able to buy, for example, an Egyptian Maadi AK-47, a TEC-9 and a MAC-11 machine pistol at gun shows across the United States.

"I bought the same gun that was used to shoot me," he said. "I bought it all, all without a background check and it was all legal. My question is, 'Why is that legal?'"

Only licensed dealers are required by law to perform background checks on the people to whom they sell guns while private sellers can make gun-show sales with no background checks.

This is known as the "gun-show loophole" and Goddard has made it his mission to close it.

In one instance, Goddard was able to buy the Maadi Egyptian for $660 and was told by the dealer "there's no tax and no paperwork."

The dealer requested to see Goddard's Ohio driver's license. When Goddard couldn't provide it, he was still able to purchase the gun by providing an Ohio address instead.

"I didn't think I was going to be able to do it at first," he said. "And then once I did it once, then twice, then three times. I was like, 'Wow, this is really easy.'

"Toward the end I wasn't even thinking about it. I tried to do it as quickly as I could, say as few words as I could."

Polls show that a majority of Americans favor closing the loophole.

Goddard says closing the loophole won't end all gun violence, but that the government can do better.

The Brady Campaign recently launched a YouTube series, "We Are Better than This," in the wake of last week's shooting at Sandy Hook Elementary School in Newtown, Conn. The videos feature celebrities and, perhaps more significantly, families of mass-shooting victims.

In the first three videos, Goddard appears, as do Lonnie and Sandy Phillips, whose daughter Jessica Redfield Ghawi, died in the Aurora, Colo., mass shooting in July.

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