Here comes Microsoft Surface Pro, 64 bits and all

Surface with Windows 8 Pro starts at an ultrabook-like $899.

(Credit:
Microsoft)

Microsoft's
Windows 8 Pro version of the Surface will arrive soon, giving consumers probably one the highest performing
tablets to date.

Microsoft is already dropping not-so-subtle hints that the device is coming "early in 2013." And now it appears to have made its debut at the FCC.

Let's look at what else Microsoft is saying about the 2-pound tablet that sets it apart from the current Surface RT tablet.

• 64-bit computing in a tablet: Surface with Windows 8 Pro is "a 64-bit tablet PC." That's not a trivial point. You get all of the goodness of 64-bit computing via Intel's power-efficient Core i5 Ivy Bridge processors. Surface RT, on the other hand, is 32-bit only.
  
• Security: Support for the same level of security you can expect with any corporate Windows laptop. And Microsoft includes sBitLocker, which encrypts your hard drive's data.
  
• Pen: It includes a pen. That's really a holdover from the
  Windows 7 slates but something that some business customers still want.
  
• Mini DisplayPort/display: This allows connection to large high-resolution displays (e.g., Apple Cinema Display). That said, the Surface Pro's 10.6-inch (16:9) 1,920x1,080-pixel display is already the same resolution of some desktop displays. Other ports include a full-size USB 3.0, microSDXC card slot, headset jack, and Cover port.
  

And we may already be getting a sneak preview of the Surface Pro courtesy of CNET's review of the Acer Iconia W700 tablet.

Like the Surface Pro, the W700 is a 2-pound Windows 8 tablet that packs an Ivy Bridge Core i5 processor and a 1,920x1,080 display.

Here's what CNET said: "In our benchmark tests, the Iconia W700 performed similarly to other Core i5-3317U Windows 8 laptops and convertibles, or a little behind. It's well-suited for everyday use, from HD video streaming to social media, to working on office tasks."

And battery life? One has to wonder whether Microsoft will be able to achieve the stellar battery of the W700. "The system ran for a very impressive 7 hours and 19 minutes," according to CNET. Yeah, that is impressive. In fact, Acer is beginning to brush up against the staying power you'd find in a high-end tablet with a power-efficient ARM chip.

But that may be too optimistic. Microsoft, in effect, pre-announced the Surface Pro's battery life the other day. Let's just hope that it trends closer to an ultrabook with a tolerable run-down time. This is a tablet, after all.

Let's close on a high note, though. Early this year, I had a chance to use the Intel Core i5-based Samsung tablet with Windows 8 Developer Preview (the same unit handed out to Microsoft Build conference attendees in 2011). I was immediately wowed by its speed. At the time, I felt it was much quicker than the iPad 2 I had been using every day.

If the Surface Pro can replicate that experience, it will attract power users looking for a snappy Windows 8 tablet.

And, remember, the Surface Pro will run all of those Windows 7 applications, too. That, alone, will make it attractive to business users.

See full Surface with Windows 9 Pro specifications .

With the recent release of the Iconia W700 tablet, Acer may be giving us a taste of the Surface Pro.

(Credit:
CNET)

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Urban Advocates Say New Gun Control Talk Overdue

For years, voices have cried in the urban wilderness: We need to talk about gun control.

Yet the guns blazed on.

It took a small-town slaughter for gun control to become a political priority. Now, decades' worth of big-city arguments against easy access to guns are finally being heard, because an unstable young man invaded an elementary school in Newtown, Conn., with a military-style assault rifle and 30-bullet magazines. Twenty young children and six adults were slain.

President Barack Obama called the tragedy a "wake-up call." Vice President Joe Biden met Thursday with Obama's cabinet and law-enforcement officers from around the country to launch a task force on reducing gun violence. Lawmakers who have long resisted gun control are saying something must be done.

Such action is energizing those who have sought to reduce urban gun violence. Donations are up in some places; other leaders have been working overtime due to this unprecedented moment.

The moment also is causing some to reflect on the sudden change of heart. Why now? Why weren't we moved to act by the killing of so many other children, albeit one by one, in urban areas?

Certainly, Newtown is a special case, 6- and 7-year-olds riddled with bullets inside the sanctuary of a classroom. Even in a nation rife with violence, where there have been three other mass slayings since July and millions enjoy virtual killing via video games, the nature of this tragedy is shocking.

Critics Slam NRA for Proposing Armed School Guards Watch Video

Gun Violence Victims, Survivors Share Thoughts After Newtown Massacre Watch Video

But still: "There's a lot of talk now about we have to protect our children. We have to protect all of our children, not just the ones living in the suburbs," said Tammerlin Drummond, a columnist for the Oakland Tribune.

In her column Monday, Drummond wrote about 7-year-old Heaven Sutton of Chicago, who was standing next to her mother selling candy when she was killed in the crossfire of a gang shootout. Also in Chicago, which has been plagued by a recent spike in gun violence: 6-year-old Aaliyah Shell was caught in a drive-by while standing on her front porch; and 13-year-old Tyquan Tyler was killed when a someone in a car shot into a group of youths outside a party.

Wrote Drummond: "It has taken the murders of 20 babies and six adults in an upper-middle class neighborhood in Connecticut to achieve what thousands of gun fatalities in urban communities all over this country could not."

So again: What took so long? The answers are complicated by many factors: resignation to urban violence, even among some of those who live there; the assumption that cities are dangerous and small towns safe; the idea that some urban victims place themselves in harm's way.

In March, the Children's Defense Fund issued a report titled "Protect Children, Not Guns 2012." It analyzed the latest federal data and counted 299 children under age 10 killed by guns in 2008 and 2009. That figure included 173 preschool-age children.

Black children and teens accounted for 45 percent of all child and teen gun deaths, even though they were only 15 percent of the child/teen population.

"Every child's life is sacred and it is long past time that we protect it," said CDF president Marian Wright Edelman in the report.

It got almost no press coverage — until nine months later, when Newtown happened.

Tim Stevens, founder and chairman of the Black Political Empowerment Project in Pittsburgh, has been focusing on urban gun violence since 2007, when he said Pennsylvania was declared the worst state for black-on-black violence.

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Football: Late-show Juventus go 10 points clear

ROME: Juventus needed two goals in stoppage time to seal a come-from-behind 3-1 win at Cagliari on Friday and move 10 points clear at the top of Serie A.

Cagliari, just a point above the relegation zone, went ahead after 16 minutes through a Mauricio Pinilla penalty awarded after Arturo Vidal had chopped down Marco Sau in the box.

In a contentious game, Cagliari played the last 30 minutes a man short after the sending off of Davide Astori, who had already been booked, for a foul on Sebastian Giovinco.

Alessandro Matri, playing against his old club, levelled for Juventus 10 minutes later and added another in the second minute of injury time.

Mirko Vucinic put away the third in the fifth minute of time added on.

"I have waited for this moment for a long time. My morale had gone down because I wasn't scoring but I always believed in myself," said Matri, who hadn't found the back of the net since September 29.

Inter Milan can close the gap on Juve back to seven points if they beat Genoa on Saturday.

- AFP/jc

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Step into NASA's next-generation spacesuit

2015: The dawn of a new era in spacesuit fashion, hopefully without neon green accents.

(Credit:
NASA)

Around 2015, NASA plans to incorporate a spacesuit that amusingly looks like the one worn by Buzz Lightyear in "Toy Story" -- sans the shiny laser beam.

Before you laugh, know that these new digs aren't toy dressings; the Z-1 NASA spacesuit offers a plethora of advantages compared with the space agency's previous designs. Think of it as the baseline architecture for future NASA spacesuits.

One of the most advantageous additions is the rear-entry hatch, which lets an astronaut put on the suit from the back, completing the process by closing the rear hatch. The current Extravehicular Mobility Unit (EMU) spacesuit -- in use since 1982 -- requires the wearer to put the pant and top portions on separately, and then connect them together. Less fidgeting and connecting means more time for spacewalks and exploring alien worlds.

The rear-entry hatch coincides with another new feature: the suit port. Instead of being stored internally, the suit could attach to the exterior of a space vehicle (such as a rover), and the astronaut could simply enter the suit from inside the vehicle. As for mobility, the Z-1 excels in that area, too: The updated shoulder joints offer greater movement capabilities. A larger bubble helmet also enhances the astronaut's field of view.

While the Z-1 goes through prototype testing, NASA continues to work on a revised portable life-support system -- known as PLSS 2.0 -- that attaches directly to the suit. PLSS 2.0 condenses all the necessary life-support systems into a single backpack, and it doesn't require canisters to help filter carbon dioxide.

"We're looking to replace those capabilities with a Rapid Cycle Amine swingbed," NASA's PLSS engineer Carly Watts said in an internal NASA newsletter. "Every few minutes it will cycle and regenerate itself to remove CO2 real time during a spacewalk, so CO2 removal capability will no longer be a consumable."

The PLSS 2.0 design incorporates one other massive bonus: the Spacesuit Water Membrane Evaporator temperature regulator, which would actually make it possible for future astronauts to comfortably walk on extraterrestrial planets. "It can be used in a Martian environment," Watts says. "It can be frozen without damaging the unit, and it's not particularly sensitive to contamination."

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The Healing Power of Dogs

One boy confided in the gentle-faced golden retriever about exactly what happened in his classroom at Sandy Hook Elementary School that day—which his parents said was more than he'd been able to share with them. A little girl who hadn't spoken since the shootings finally started talking to her mother again after petting one of the "comfort dogs." Groups of teenagers began to open up and discuss their fear and grief with each other as they sat on the floor together, all stroking the same animal.

The dogs are therapy dogs—professional comforters that were brought to Newtown, Connecticut, almost immediately after the horrific shootings on December 14 that left 20 young children and 6 staff members dead.

Tim Hetzner, leader of the Lutheran Church Charities (LCC) K9 Comfort Dogs team, traveled to Newtown with nine specially trained golden retrievers and their volunteer handlers from the Addison, Illinois-based group.

Using a local Lutheran church as their base, the K9 teams have spent the past few days visiting schools, churches, activity centers, and private homes in the community. They only go where they're invited and are careful to let people approach the dogs instead of vice versa, in case anyone is afraid of or allergic to the animals.

Counselors With Fur

The response to the dogs has been overwhelmingly positive, according to Hetzner.

"A lot of times, kids talk directly to the dog," he said. "They're kind of like counselors with fur. They have excellent listening skills, and they demonstrate unconditional love. They don't judge you or talk back."

The dogs are also used to reassure victims of natural disasters—most recently, Superstorm Sandy—and to brighten the days of nursing home patients. Hetzner said he got the idea after seeing how well students responded to therapy dogs in the wake of a 2008 school shooting at Northern Illinois University. Now, in addition to the core of 15 that make up LCC's K9 Comfort Dogs team, the group has deployed about 20 other dogs to be based in schools and churches that apply for them.

The human volunteers' main job is to make sure the dogs don't get burned out, which means taking a break to play ball or nap after about two hours of work. Although some handlers have a background in counseling or pastoral care, "the biggest part of their training is just learning to be quiet," Hetzner said.

"I think that's a common mistake people make in crisis situations—feeling obligated to give some sort of answer or advice, when really, those who are hurting just need to express themselves."

The Human-Canine Bond

Why does petting a dog make us feel better? It's not just because they're cute, says Brian Hare, director of Duke University's Canine Cognition Center.

The human-canine bond goes back thousands of years. Dogs descend from wolves and have been attracted to humans ever since we began living in settlements—a source of tasty garbage. That created an advantage for wolves to live near humans, and since it tended to be the less aggressive wolves that could do this more effectively, they essentially self-domesticated over time, according to Hare.

(Read more about the evolutionary history of dogs in the February 2012 National Geographic magazine cover story, "How To Build a Dog.")

Part of what makes dogs special is that they are one of the only species that does not generally exhibit xenophobia, meaning fear of strangers, says Hare.

"We've done research on this, and what we've found is that not only are most dogs totally not xenophobic, they're actually xenophilic—they love strangers!" Hare said. "That's one way in which you could say dogs are 'better' than people. We're not always that welcoming."

People also benefit from interacting with canines. Simply petting a dog can decrease levels of stress hormones, regulate breathing, and lower blood pressure. Research also has shown that petting releases oxytocin, a hormone associated with bonding and affection, in both the dog and the human.

Do Dogs Have Empathy?

In situations like the Newtown shootings, it makes a lot of sense that dogs would be an effective form of comfort, says psychologist Debbie Custance of Goldsmiths College, University of London.

"Dogs are social creatures that respond to us quite sensitively, and they seem to respond to our emotions," she said.

Custance recently led a study to see whether dogs demonstrated empathy. She asked volunteers to either pretend to cry, or just "hum in a weird way." Would the dogs notice the difference?

"The response was extraordinary," she said. Nearly all of the dogs came over to nuzzle or lick the crying person, whether it was the owner or a stranger, while they paid little attention when people were merely humming.

"We're not saying this is definitive evidence that dogs have empathy—but I can certainly understand why people would think they do, at least," Custance said.

Other animals can also be useful in what's known as "animal-assisted therapy." The national organization Pet Partners has 11,000 registered teams of volunteer handlers and animals that visit nursing homes, hospitals, schools, and victims of tragedy and disaster. Although most of the teams use dogs, some involve horses, cats, rabbits, guinea pigs, birds, and even barnyard animals like pigs and chickens.

The presence of an animal can help facilitate a discussion with human counselors or simply provide wordless emotional release, said Rachel Wright, director of Pet Partners' therapy animal program. The group plans to deploy several teams of therapy dogs to Newtown in the near future, working closely with agencies that are already present in the community, she said.

To some, the idea of sending a dog to a grieving person might seem too simplistic. But Custance says that very simplicity is part of what makes the connection between humans and canines so powerful.

"When humans show us affection, it's quite a complicated thing that involves expectations and judgments," she said. "But with a dog, it's a very uncomplicated, nonchallenging interaction with no consequences. And if you've been through a hard time, it's lovely to have that."

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Critics Slam NRA's Call for Armed School Guards

Gun control advocates slammed the National Rifle Association today for its proposal to create a force of armed security guards at schools across the country as a response to the Connecticut school shooting.

"It is beyond belief that following the Newtown tragedy, the National Rifle Association's leaders want to fill our communities with guns and arm more Americans," Sen. Frank Lautenberg, D-N.J., said.

Criticism mounted after the NRA addressed for the first time last week's school shooting in Newtown, Conn., in which Adam Lanza, 20, used a semiautomatic weapon to open fire on students and teachers at Sandy Hook Elementary School, killing 26 at the school.

NRA spokesman Wayne LaPierre this morning dismissed the notion that the pro-gun group of about 4 million members would support any kind of gun-control laws, instead saying that "the only thing that can stop a bad guy with a gun is a good guy with a gun."

Rep. Chris Murphy, D-Conn., who represents the district encompassing Newtown, reacted angrily to the comments after attending the funeral of another victim from last Friday's massacre.

"Walking out of another funeral and was handed the NRA transcript. The most revolting, tone deaf statement I've ever seen," @ChrisMurphyCT tweeted.

LaPierre argued that the answer to gun violence in schools is an armed security force that can protect students, made up of trained volunteers stationed at every school across the country.

"It's not just our duty to protect [our children], it's our right to protect them," LaPierre said at a news conference. "The NRA knows there are millions of qualified active and reserved police, active and reserve military, security professionals, rescue personnel, an extraordinary corps of qualified trained citizens to join with local school officials and police in devising a protection plan for every single school."

He was interrupted twice by protestors who stood in front of LaPierre's podium holding signs and shouting that the NRA "has blood on its hands" and that the NRA is "killing our kids."

The protestors were eventually escorted out of the room.

Lautenberg, who has introduced legislation that would ban large-capacity ammunition magazines, called the NRA "irresponsible."

"The NRA points the finger of blame everywhere and anywhere it can, but they cannot escape the devastating effects of their reckless comments and irresponsible lobbying tactics," Lautenberg said.

Mark Kelly, a former NASA astronaut and husband of former congresswoman Gabrielle Giffords, who was shot in Arizona, said, "The NRA could have chosen to be a voice for the vast majority of its own members who want common sense, reasonable safeguards on deadly firearms, but instead it chose to defend extreme pro-gun positions that aren't even popular among the law-abiding gun owners it represents."

Chip Somodevilla/Getty Images

National Rifle Association Calls for Armed Security at Schools Watch Video

President Obama Launches Gun-Violence Task Force Watch Video

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

The Violence Policy Center, a gun-control advocacy organization, said the NRA's idea of arming security guards at schools would not stop school violence.

"The NRA plan, which cynically allows for the continued sale of the assault weapons and high-capacity ammunition magazines marketed by its gun industry corporate donors, has already been tried, and it did not work," the group said in a statement released today.

It pointed to the mass shooting at Columbine High School in 1999, in which two armed police officers were at the school when Eric Harris and Dylan Klebold opened fire. The officers exchanged gunfire with the killers, but were unable to stop them from their rampage.

House Minority Leader Nancy Pelosi conceded that the issue is "complicated, but she said the NRA's call for an escalation "is not a positive force" in the renewed gun-control debate.

"For the NRA and others to sort of shield themselves by saying it's the mentally ill or something, and therefore we have to have more armed cops in the schools or more guns in the school -- what are they -- are they going to have [a gun] on the teacher's desk?" Pelosi wondered.

"'Wait a minute, man with a gun; I have it locked up someplace. Wait until I go get it.' I mean, this ... just doesn't make sense; we've got to reduce violence."

LaPierre had dismissed the notion that banning so-called assault weapons or enacting gun-control laws would stop school violence. He instead cast blame for gun violence in schools on violent entertainment, including video games, and the media.

"How many more copycats are waiting in the wings for their moment of fame from a national media machine that rewards them with a wall of attention they crave while provoking others to make their mark?" he asked.

LaPierre announced that former U.S. congressman Asa Hutchinson of Arkansas would lead the NRA's effort to advocate for school security forces. Hutchinson specified that the NRA, with about 4 million members, is calling for volunteers to act as the armed guards, rather than requiring funding from local or federal authorities.

"Whether they're retired police, retired military or rescue personnel, I think there are people in every community in this country who would be happy to serve if only someone asked them and gave them the training and certifications to do so," Hutchinson said.

NRA leaders have held off on interviews this week after refusing to appear on Sunday morning public affairs shows. They said they would grant interviews beginning next week to discuss their position.

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."

The guns used in the attack were legally purchased and owned by the shooter's mother, Nancy Lanza, whom 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.

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Van-sized space rock is a cosmic oddball

The shattered remains of a high-profile space rock are oddly low in organic materials, the raw ingredients for life. The discovery adds a slight wrinkle to the theory that early Earth was seeded with organics by meteorite impacts.

In April a van-sized meteor was seen streaking over northern California and Nevada in broad daylight. The fireball exploded with a sonic boom and sprayed the region with fragments. Videos, photographs and weather radar data allowed the meteor's trajectory to be reconstructed, and teams quickly mobilised to search for pieces in the foothills of the Sierra Nevada in northern California.

Researchers readily identified the meteorites as rare CM chondrites, thought to be one of the oldest types of rock in the universe. "Because the meteorites were discovered so freshly, for the first time we had a chance to study this type of meteorite in a pristine form," says Peter Jenniskens of the SETI Institute in Mountain View, California, who led the search effort and the subsequent study of the space rocks.

Jenniskens personally found a fragment in a parking lot, where it remained relatively free of soil contaminants. "That's the best you could hope for, other than landing in a freezer," says Daniel Glavin of NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Battered past

CM chondrites make up only about 1 per cent of known meteorites. Most of them contain plenty of organic materials, including amino acids, the building blocks of life on Earth.

Jenniskens and colleagues found that the California fragments also have amino acids, including some not found naturally on Earth. But in three rocks collected before a heavy rainstorm, which bathed the other pieces in earthly contaminants, organics are less abundant by a factor of 1000 than in previously studied CM chondrites.

These three rocks could not have lost organics due to space "weathering": analysis of the meteorites' exposure to cosmic rays suggests the original meteor was flying through space for only about 50,000 years before hitting Earth.

Based on its trajectory and its relatively short flight time, Jenniskens thinks the meteor can be traced back to a family of asteroids dominated by 495 Eulalia, a group known as a possible source of CM chondrites. It is probably a piece that broke off during an impact, revealing the relatively pristine material inside.

So what happened to its organics? Jenniskens' team found that the meteorites are breccia – smaller rocks cemented together – which suggests that the asteroid from which they came took a series of beatings. Those impacts, or possibly other processes inside the asteroid, could have heated it enough to destroy most organic material.

Limited delivery

The result might have implications for the organics delivery theory, says Bill Bottke of the Southwest Research Institute in Boulder, Colorado.

"It shows that not all asteroids can deliver sufficient quantities. One of the disappointments is that, from a prebiotic organic chemistry perspective, it was very limited," says Bottke. "But this is an unusual case. Most [CM chondrites] are loaded with organic compounds."

Still, studying the space rocks will help us prepare future missions to asteroids such as OSIRIS-Rex, scheduled to take off for asteroid 1999 RQ36 in 2016 and bring a sample back in 2023.

"In some ways, we've had a sample, a very fresh one, come to us," says Bottke. "This is a test bed for the techniques we'll use in that mission."

Journal reference: Science, DOI: 10.1126/science.1227163

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Football: We must remain focused: Duric

BANGKOK: Thanks to Baihakki Khaizan's late strike sealing a 3-1 win for Singapore over Thailand in the first leg of the ASEAN Football Federation Suzuki Cup final on December 19, it now appears that the Lions have one hand firmly on the trophy.

But forward Aleksandar Duric has declared that there is absolutely no room for thoughts like that in the Singapore camp.

The 22-man squad arrived in Bangkok on Thursday for the return leg, which will be played on December 22 at the Supachalasai Stadium, and the veteran marksman has urged his team-mates to keep their eye on the ball.

"Sure it's a nice score at 3-1 for us, but it's only half-time," said Duric, 42.

"The Thais will have a second chance and I'm sure they will want to grab it. For us it's important to stay cool and not do anything stupid on the field.

"I have been telling the younger players how important it is not to lose sight of the mission that is yet to be completed.

"To be overconfident at this stage is the worst thing that can happen to us. Stay cool, stay focused, keep up the hard work and we will be fine."

Duric was speaking upon the team's arrival at their hotel in Bangkok, following a long journey made more tiring by Bangkok's notorious evening rush hour. But despite the many hours spent seated in the coach, the squad looked relaxed.

After a quick meal, the players spent 90 minutes in the hotel's swimming pool as part of the recovery process.

It was also revealed that left-back Shaiful Esah, who received a knock to his head on Wednesday, has been declared fit.

"It has been one tiring day," said Lions team manager Eugene Loo.

"Getting to the airport, clearing immigration and the slow bus ride to the hotel. But we knew what to expect, so there is no irritation or frustration on our part. We are here to do a job and finish it successfully."

- TODAY

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How to tame annoying alert sounds in OS X

One of the primary uses of computers is, of course, for media, whether you're watching movies, listening to music, playing a game, or running through a feature-packed slideshow. In the middle of the fun, it can be incrediby frustrating to get interrupted by a loud swoosh as you receive a new e-mail, or a speech alert telling you some other program needs attention.

To avoid such interruptions, of course you can quit the various applications like Mail and instant-messaging clients that may cause them, but this will not guarantee silence, as alerts can still crop up from other sources.

There are several ways you can manage alert sounds in OS X:

Place custom sounds in the /Library/Sounds/ folder. You can also separately adjust alert volumes and output devices in the Sound system preferences.

(Credit:
Screenshot by Topher Kessler/CNET)

1. Use a less intrusive sound
   OS X has a few different alert sounds, some more prominent than others. You can try them out in the Sound Effects section of the Sound system preferences and choose one you find less jarring. In addition to Apple's sounds, you can supply custom sounds of your own. Simply take any sound clip in AIFF format and place it in the /Library/Sounds/ folder in the drive named Macintosh HD (or in the library within your user account) and the sound should show up as "Custom" in the Sound Effects list.


2. Reduce alert volumes
   OS X treats alerts differently than other audio (such as audio from games and media players), so you can control their volume separately. Again in the Sound Effects section of the Sound system preferences, set the "Alert volume" slider to a lower value, or lower it completely to mute all alert sounds.


3. Use a different output device for alerts
   If you have multiple audio interfaces, then you can specify one for alerts that's separate from the one for default audio playback. In the same Sound Effects tab, simply choose the device to use in the "Play sound effects through:" menu, and that will isolate them to that interface. You can set the default audio output in the Output section of the Sound system preferences.

Another tip that might be beneficial for people who regularly just plug their Macs in and play audio through them. If you need to adjust playback volume you can usually do so from within the media player itself, or perhaps more conveniently you can adjust the overall system volume using your
Mac keyboard's volume controls. However, this does by default result in a "pop" sound demonstrating the new volume level.

If you don't want to hear this, you can disable it temporarily by holding the Shift key when adjusting the audio volume, or you can disable it completely by unchecking "Play feedback when volume is changed" in the Sound Effects audio preferences.

---

Questions? Comments? Have a fix? Post them below or !
Be sure to check us out on Twitter and the CNET Mac forums.

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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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