Video games take off as a spectator sport

Editorial: "Give video games a sporting chance"

EVERY sport has its idols and superstars. Now video gaming is getting them too. Professional gaming, or e-sports, exploded in popularity in the US and Europe last year.

The scene has been big in Asia - particularly South Korea - for about a decade, with top players such as Lim Yo-Hwan earning six-figure salaries and competing for rock-star glory in Starcraft tournaments that attract audiences in the hundreds of thousands.

The phenomenon is taking off in the West partly because of improved video-streaming technology and large financial rewards. Video games are becoming a spectator sport, with certain players and commentators drawing massive online audiences.

And where people go, money follows. The second world championship of League of Legends - a team-based game in which players defend respective corners of a fantasy-themed battle arena - was held in Los Angeles in October. The tournament had a prize pool of $5 million for the season, with $1 million going to winning team Taipei Assassins, the largest cash prize in the history of e-sports.

League of Legends has also set records for spectator numbers. More than 8 million people watched the championship finals either online or on TV - a figure that dwarfs audience numbers for broadcasts of many traditional sports fixtures.

But gamers don't need to compete at the international level to earn money. Video-streaming software like Twitch makes it easy for players to send live footage to a website, where the more popular ones can attract upwards of 10,000 viewers - enough for some to make a living by having adverts in their video streams. Gamers can go pro without leaving their homes.

Currently, e-sports productions are handled by gaming leagues - but that could soon change. Last November saw two moves that will make it even easier to reach a global online audience. First, Twitch announced it would be integrating with Electronic Arts's Origin service, a widely used gaming platform. This would let gamers stream their play at the click of a button, making it easy for people around the world to watch.

Also in November came the latest release from one of gaming's biggest franchises, Call of Duty: Black Ops 2, which has the ability to live-stream via YouTube built into the game itself. Another feature allows the broadcast of in-game commentary for multiplayer matches.

"I think we will reach a point, maybe within five years, where spectator features are a necessity for all big game releases," says Corin Cole of e-sports publishing company Heaven Media in Huntingdon, UK.

David Ting founded the California-based IGN Pro League (IPL), which hosts professional tournaments. He puts the popularity of e-sports down to the demand for new forms of online entertainment. "After 18 months, IPL's viewer numbers are already comparable to college sports in the US when there's a live event," he says. "The traffic is doubling every six months."

Ting sees motion detection, virtual reality and mobile gaming coming together to make physical exertion a more common aspect of video games, blurring the line between traditional sport and e-sports. "Angry Birds could be this century's bowling," says Ting.

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Money talks at Obama's inauguration

WASHINGTON: As hundreds of thousands of Americans crowd the National Mall for President Barack Obama's second inauguration on January 21, the best seats will already be filled -- sold for a hefty price.

Obama limited individual donations to $50,000 for his first inaugural in 2009, and banned corporate donors as he sought to distance himself from special interests amid the historic swearing-in of the country's first black president.

His reticence over money did little to stop the flow of cash, however, and the new US leader racked up a record $53 million in private donations, much of it coming from the 1.8 million people who packed Washington for the event.

This second time around, such lofty intentions -- and Obama's pledge to have the most transparent US administration ever -- appear to have been shelved in advance, with companies invited to join in -- and fund -- the proceedings.

For the White House is throwing open the gates of largesse for supporters to contribute as much as $1 million for special access. The money could buy much more than a coveted seat near the president as he takes the oath of office.

"This is an avenue for special interests, especially wealthy corporations, to get their last chance to throw money at the feet of the president," Craig Holman, an expert on campaign finance reform, told AFP.

"The real intent is for the corporations to buy access and influence with the White House," added Holman, from consumer advocacy group Public Citizen.

In this year's invitations, copies of which were posted online by the Sunlight Foundation, an accountability group, the Presidential Inaugural Committee (PIC) formalized four different donation levels -- each with a name of one of the nation's founding fathers.

For $10,000 from individuals and $100,000 from business entities, "Madison" benefactors receive an invitation to a finance committee "road ahead" meeting, two tickets to a candlelight celebration on the eve of the inauguration, and a pair of tickets to the inaugural ball.

"Washington" contributors -- individuals who pay $250,000 and corporations that shell out $1 million -- gain "premium partner access" that also includes attendance at VIP receptions, seats for the inaugural parade, four ball tickets and passes to a concert with Stevie Wonder and Katy Perry.

Just who exactly will be buying in to such events, and how much will they be paying? Right now, it is a mystery.

In 2009, donors and their offerings were published on the Internet, but this year only the names are being disclosed in the short term. The amounts given will be published within 90 days of the inauguration.

A PIC spokesman said the lavish perks were offered to donors to get them to open their wallets one more time to help fund the inaugural festivities, after many of them contributed to the most expensive political race in US history.

The 2012 presidential campaign exceeded $2 billion, partly due to a Supreme Court case that lifted a cap on independent political spending by corporations.

Ironically, inauguration day will coincide with the second anniversary of the landmark Citizens United ruling, but funding fatigue may be setting in with the inaugural committee reportedly struggling to meet its $50 million target.

Private donations cover the party element of the inauguration, while taxpayers foot the bill for security.

According to a congressional report, more than 30,000 police were mobilized for the record inaugural crowd that jammed Washington's National Mall in 2009.

Authorities expect fewer people this year but security remains paramount -- dozens of streets will be closed to traffic and metal detectors will be used to scan the thousands ticketed guests.

The exact number of VIP donors is unknown, but a Department of Homeland Security report indicated that four years ago at least 750 were transported to the west front of the Capitol, where seats were reserved near the podium.

One donor perk that the Washington Post identified as a security breach in 2009 and will likely not be repeated this time around: some VIPs arranged to have their photo taken near the presidential limousine.

- AFP/ck

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Making job stress worth enduring

Defense Secretary Leon Panetta swears in reenlisting troops in Turkey. A survey found that military jobs tend to be the most stressful.

STORY HIGHLIGHTS

• Marci Alboher: Annual list of most stressful jobs drew attention


• She says the right issue is whether job rewards compensate for stress


• People who take on stressful jobs that help others report satisfaction, she says

Editor's note: Marci Alboher, is a Vice President of Encore.org, a nonprofit making it easier for people to pursue second acts for the greater good. Her latest book is, "The Encore Career Handbook: How to Make a Difference and a Living in the Second Half of Life" (Workman: January 2013).

(CNN) -- A recent study with a catchy headline about the most stressful jobs of 2013 found its way to the soft hour of news this week.

The annual study by careercast.com created some buzz in the online water cooler and I was asked to appear on the "Today" show to talk about it. Colleagues e-mailed me and posted on my Facebook page about where their chosen professions ranked. My media friends couldn't help noticing that public relations professionals, reporters and photojournalists all made it into the top 10 for stress.

The "study," referred to in quotes in some of the commentary, considered some logical criteria to come up with these rankings. Proximity to risk of death (yours or others'), travel, deadlines, working in the public eye and physical demands all racked up points on the stress scale. And there's no arguing that military personnel, firefighters and police officers -- all high-rankers on the most-stressed list -- are exposed to higher stakes than your typical seamstress (holder of the second-least stressful job slot).

Marci Alboher

The job that snagged the "least stressful" slot, according to the survey, was "university professor," a designation that caused outrage among people who actually hold that job. One commenter conceded that most academic jobs don't put you in personal danger (though you can argue that point), but anyone who's ever been around professors knows that faculty politics, difficult students and pressure to "publish or perish" can cause even the most calm character to crack.

We could debate whether these designations make any sense. And whether every police officer, firefighter and member of the military faces the same amount of stress.

But let's make sure we are having the right conversation. How many people choose a profession based on how high the stress level is? And how can you measure stress objectively? If you're prone to stress, perhaps you're just as likely to feel stressed out whether you work as a librarian, a massage therapist or a commercial airline pilot (No. 4 on the stress list).

People choose their line of work for a lot of reasons. For those who are committed to making our communities and the world safer and healthier for the rest of us, minimizing stress is probably not so high on their list of criteria. And it shouldn't be. Folks who choose helping jobs that may have a high level of stress are fueled by other motivators, like wanting their work to have meaning.

They aren't deterred by the fact that their job will likely come with stress. And some people are simply by their own nature and personalities drawn to work that may be to others, dauntingly stressful. How many FBI agents do you think would prefer a gig as an audiologist (sixth-least stressful job)?

When I talk to men and women in their 50s and 60s who've decided to take on encore careers as teachers, they tell me that the work is often exhausting and stressful. They are on their feet all day, often with inadequate resources, with kids who are themselves highly stressed; even those who come from leadership roles in other sectors say they've never worked harder. Yet they almost always tell me that doing something that matters to others -- and that puts them in touch with young people every day -- compensates for the added stress.

The same is true of those tackling some of the world's most intractable problems. When I talk to Stephen and Elizabeth Alderman, whose foundation trains health-care professionals around the world to work with victims of trauma, or Judith Broder, who founded The Soldiers Project, which works with returning veterans, they rarely talk about stress. Instead they talk about how they are compelled to do what they do, because moving the needle even a fraction is better than doing nothing.

Rather than discouraging people to take on jobs that might have a lot of stress, let's instead encourage those who are designed for those jobs to do them. And let's make sure to support our friends and family members who go down these paths.

It's hard to grab headlines in the crowded space of morning television, but a good survey with a catchy title will always do that. So let's use these kinds of surveys to have the right kinds of conversations. Like why so many jobs that keep us safe and healthy, and that care for our children and the environment rarely show up on lists of the most highly compensated jobs. Now there's a conversation I'd most like to be having.

Follow us on Twitter @CNNOpinion

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The opinions expressed in this commentary are solely those of Marci Alboher.

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Treasury: No $1 trillion coin

A Treasury Department spokesman announced today that the department will not mint a platinum coin to sidestep raising the federal government's borrowing limit, telling the Washington Post that "neither the Treasury Department nor the Federal Reserve believes that the law can or should be used to facilitate the production of platinum coins for the purpose of avoiding an increase in the debt limit."

The idea, which had gained traction among some congressional Democrats and political analysts as a way of defanging the debt ceiling as a bargaining chip, was that the Treasury Department could simply mint a platinum coin, declare the value at $1 trillion, and deposit it into the Federal Reserve to allow continued spending in the absence of a vote to raise the debt ceiling.

With the idea now buried by Treasury, the stage is set for a full-on fight about the debt ceiling. President Obama and congressional Democrats have signaled that they simply will not negotiate on a vote to raise the borrowing limit, saying that it is Congress's duty to pay bills it has already accrued.

But congressional Republicans have given every indication that they plan to use the debt limit as a bargaining chip to extract deep spending cuts from reluctant Democrats.

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Poisoned Lottery Winner's Kin Were Suspicious

Urooj Khan had just brought home his $425,000 lottery check when he unexpectedly died the following day. Now, certain members of Khan's family are speaking publicly about the mystery -- and his nephew told ABC News they knew something was not right.

"He was a healthy guy, you know?" said the nephew, Minhaj Khan. "He worked so hard. He was always going about his business and, the thing is: After he won the lottery and the next day later he passes away -- it's awkward. It raises some eyebrows."

The medical examiner initially ruled Urooj Khan, 46, an immigrant from India who owned dry-cleaning businesses in Chicago, died July 20, 2012, of natural causes. But after a family member demanded more tests, authorities in November found a lethal amount of cyanide in his blood, turning the case into a homicide investigation.

"When we found out there was cyanide in his blood after the extensive toxicology reports, we had to believe that ... somebody had to kill him," Minhaj Khan said. "It had to happen, because where can you get cyanide?"

In Photos: Biggest Lotto Jackpot Winners

Authorities could be one step closer to learning what happened to Urooj Khan. A judge Friday approved an order to exhume his body at Rosehill Cemetery in Chicago as early as Thursday to perform further tests.

Lottery Winner Murdered: Widow Questioned By Police Watch Video

Moments after the court hearing, Urooj Khan's sister, Meraj Khan, remembered her brother as the kind of person who would've shared his jackpot with anyone. Speaking at the Cook County Courthouse, she hoped the exhumation would help the investigation.

"It's very hard because I wanted my brother to rest in peace, but then we have to have justice served," she said, according to ABC News station WLS in Chicago. "So if that's what it takes for him to bring justice and peace, then that's what needs to be done."

Khan reportedly did not have a will. With the investigation moving forward, his family is waging a legal fight against his widow, Shabana Ansari, 32, over more than $1 million, including Urooj Khan's lottery winnings, as well as his business and real estate holdings.

Khan's brother filed a petition Wednesday to a judge asking Citibank to release information about Khan's assets to "ultimately ensure" that [Khan's] minor daughter from a prior marriage "receives her proper share."

Ansari may have tried to cash the jackpot check after Khan's death, according to court documents, which also showed Urooj Khan's family is questioning if the couple was ever even legally married.

Ansari, Urooj Khan's second wife, who still works at the couple's dry cleaning business, has insisted they were married legally.

She has told reporters the night before her husband died, she cooked a traditional Indian meal for him and their family, including Khan's daughter and Ansari's father. Not feeling well, Khan retired early, Ansari told the Chicago Sun-Times, falling asleep in a chair, waking up in agony, then collapsing in the middle of the night. She said she called 911.

"It has been an incredibly hard time," she told ABC News earlier this week. "We went from being the happiest the day we got the check. It was the best sleep I've had. And then the next day, everything was gone.

"I am cooperating with the investigation," Ansari told ABC News. "I want the truth to come out."

Ansari has not been named a suspect, but her attorney, Steven Kozicki, said investigators did question her for more than four hours.

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Today on New Scientist: 11 January 2013

Largest structure challenges Einstein's smooth cosmos

One-twentieth the diameter of the observable universe, a group of galaxies dents the cherished idea that the cosmos is uniform at large scales

Straitjacket drug halts herpes virus's escape stunt

Herpes infections recur as the virus is adept at evading our defences, but a new drug that suppresses enzymes exploited by the virus seems effective

Zoologger: Mouse eats scorpions and howls at the moon

Super-aggressive grasshopper mice are not put off by the deadly venom of the scorpions they feast on - in fact, nothing much seems to scare them

Sand tsunami pictured striking Australian coast

The spectacular wall of sand and dust appears to block out the sun like a giant wave

Astrophile: Zombie stars feed on Earth-like exoplanets

We can now learn what planets around other stars are made of - by looking at the atmospheres of white dwarfs that have swallowed up their worlds

Life will find a way, even in the midst of a hurricane

Not for the faint-hearted: to sample the microbiome of a hurricane, fly a jetliner through it

Physics not biology may be key to beating cancer

Billions of dollars spent on cancer research have yielded no great breakthrough yet. There are other ways to attack the problem, says physicist Paul Davies

Feedback: Return of nominative determinism

The last nominative determinism stories, salads of gizzards and his chestnuts, Australian graduates in outer space, and more

A comeback for virtual reality? Inside the Oculus Rift

The Oculus Rift promises an immersive gaming experience like no other. Niall Firth gets his head in the game and gives it a try

Is the US facing Flu-maggedon?

The US flu season has come early this winter, leaving many hospitals overwhelmed. But is the situation really any worse than usual?

Your body's insights into life and cosmos

The Universe Within by Neil Shubin tells stories from your body about our species, planet and universe. PLUS: a cautionary tale of inspirational scientists

Hands on with Leap Motion's gestural interface

The makers of the ultra-precise gestural interface talk big about killing off the mouse. But it looks like more than just bluster

Personal assistant for your emails streamlines your life

GmailValet aims to use crowdsourcing to give everyone a personal assistant to help deal with their emails - it could cost as little as $2 a day

DNA 'identichip' gives a detailed picture of a suspect

A new microchip-based DNA tester can identify multiple traits of an individual at a time, even where their DNA is scarce

Most fundamental clock ever could redefine kilogram

Physicists have created the first clock with a tick that depends on the hyper-regular frequency of matter itself

Nanomachine mimics nature's protein factory

An artificial ribosome that assembles proteins and peptides could make it much easier to manufacture antibiotics and exotic new materials

Muscle mimic pulls electricity from wet surface

A plastic film that repeatedly curls up and flips over when wet could power devices in remote areas or sensors embedded in sweaty clothing

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US study warns of extreme heat, more severe storms

WASHINGTON: A government report warned on Friday that the United States could face more frequent severe weather including heat waves and storms for decades to come as temperatures rise far beyond levels being planned for.

The draft Third National Climate Assessment, a scientific study legally mandated to advise US policymakers, made few bones that carbon emissions have been causing climate change -- a source of controversy among some lawmakers.

"Evidence for climate change abounds, from the top of the atmosphere to the depths of the oceans," the study said. "The sum total of this evidence tells an unambiguous story: The planet is warming."

The study, which was submitted for public and expert review and could be revised, said there was "strong evidence" that human activity had already roughly doubled the probability of extreme heat of the kind seen in Texas and Oklahoma in the summer of 2011.

The assessment expected temperatures to keep rising and offered different scenarios for the future -- including temperatures rising between 2.8 and 5.6 degrees Celsius (5 and 10 degrees Fahrenheit) after 2050 if emissions climb further.

Such a rise would be far beyond the level anticipated by world leaders in UN-backed climate change negotiations, which have committed to holding warming to no more than two degrees Celsius above pre-industrial levels.

The report warned that climate change "threatens human health and well-being in many ways," including through more frequent storms, wildfires, diseases and worse air quality.

Rising sea levels have already damaged infrastructure and climate change could increasingly reduce the reliability of water supplies, particularly in the southern half of the United States and Great Plains, the report said.

While US agriculture will likely remain resilient in the next 25 years, yields of major crops could start declining by mid-century and warming oceans could threaten fish, the study said.

The draft assessment said that some additional climate change was "now unavoidable" but said that the United States still could decide how much to allow.

The draft assessment was released three days after the National Oceanic and Atmospheric Administration said that 2012 was easily the warmest year on record in the continental United States and ranked second for extreme weather.

Environmental advocates hoped that the release of the draft report would bring fresh momentum to efforts to tackle climate change.

"Climate change is taking its toll on people and their economies, and will only become more intense without a strong and rapid response here in the United States and around the globe," Andrew Steer, president of the World Resources Institute, said in a statement.

President Barack Obama has hinted he will make a new effort on climate change in the wake of his November 6 re-election and massive storm Sandy, which killed at least 120 people in the US Northeast.

Efforts by Obama's Democratic Party to mandate cuts in carbon emissions failed in 2010 in the Senate. Lawmakers of the rival Republican Party said that legislation would be too costly and voiced doubt over climate science.

Since then, the Obama administration has ordered higher standards for power plants. US emissions dropped in 2011, largely due to increased use of natural gas instead of coal.

World Bank president Jim Yong Kim, who released a report in November that warned of potentially catastrophic 4.0 degree Celsius warming if no action is taken, said that evidence is "overwhelming" on climate change.

Speaking on Friday at a luncheon honouring Korean Americans, Kim voiced fear that his three-year-old son would live "a world that looks completely different from the world we have today" when he nears his father's age in 2060.

"If you have a three-year-old child, or if you have a three-year-old grandchild, what you've got to understand is, if we don't act aggressively on climate change, the world they live in will be daily fights over access to water, daily fights over access to food," he said.

- AFP/al

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Why death comes sooner in America

A report finds that Americans have "shorter lives and poorer health," coming in last in key areas behind 16 other rich nations

STORY HIGHLIGHTS

• Aaron Carroll: New study shows U.S. health and lifespan worst of 17 rich countries


• He says it's because of personal choices, systemic woes. Poverty high, health care uneven


• He says this particularly affects youth, plagued by sickness, violence, high mortality


• Carroll: Don't make it political. The richest country in the world must improve public health

Editor's note: Dr. Aaron E. Carroll is an associate professor of pediatrics at the Indiana University School of Medicine and the director of the university's Center for Health Policy and Professionalism Research. He blogs about health policy at The Incidental Economist and tweets at @aaronecarroll.

(CNN) -- A just-released report from the Institute of Medicine and National Research Council is making news by clearly illustrating that Americans have "shorter lives and poorer health." This is somewhat shocking, given how much we spend on health care each year — more than any of the 16 other rich countries surveyed in the study. What's even more upsetting is that this report focused quite heavily on people who are young. In the United States, even that group fared poorly.

Aaron Carroll

Why is this?

Some of the reasons involve choices make at a personal level. We eat too much, abuse drugs too often, wear seat belts too rarely and commit violence against each other to often.

Systemic issues are also to blame. We have higher levels of poverty than comparable countries, and our safety net programs are less capable of catching people when they fall. And too many also have too much trouble accessing the health care system, resulting in inefficient, ineffective and often absent care.

It's far too easy to let these dreadful statistics become obscured in a politically charged argument. Let's avoid that. This report is so stark that it's going to take a concerted effort on the part of the government, the media, the health care system and everyday citizens to turn things around. Our personal choices are bad. Our safety nets are bad. Our health care system is bad. It's all bad. How bad?

When compared with peer countries, the United States was the absolute worst with respect to still births, infant mortality and low birth weight. Some have tried to blame this on "coding" differences. In other words, they will claim that other countries will refuse to define a premature birth as we do, resulting in artificially high numbers in the United States. But when this report recalculated the rates to exclude such births equally in all countries, we still ranked last.

Things don't get better after birth. The chance that a child in the United States will die before age 5 is higher than in any of the other 16 peer countries. Injuries are the most common cause of death, but the United States also has the highest rate of deaths caused by negligence or abuse.

And violence is decidedly an American problem. Homicide is the third most common cause of death in children age 1-4.

From age 5-19, the trend continues. Kids this age in the United States have the worst health ranking of the 17 studied countries. More than one-third of U.S. children age 5-17 are obese or overweight, the highest of any peer country. The adolescent pregnancy rate in the United States is about 3.5 times the average of others. Additionally, the rates of sexually transmitted infections, including syphilis, gonorrhea and chlamydia are the worst compared to peer countries.

Nor are these children exempt from death. Injury deaths are more common in 15- to 19-year-olds in the United States than in any other studied country. Homicide claims the second highest number of lives in 15- to -24-year-olds, and 4 in 5 of those deaths involve guns. Males between the ages of 15 and 19 are five times as likely to die from violence in the United States than in other countries.

Even as young adults, ages 25-34, mortality remains consistently upsetting and preventable. Unintentional injuries remain the No. 1 cause of death. The risk of dying by violence remains seven times higher for males in the United States ages 20-24 than in other countries.

We have to work together to make these numbers better. Some of them can be improved with public health measures. We need to help Americans be less obese, to have fewer accidents and to commit less violence. There are lots of local studies and initiatives that propose ways to fix these things, but our public health system is woefully underfunded, and translating any promising findings to meaningful societal change poses a huge challenge.

We also need to improve our safety nets to help children at the lowest end of the socioeconomic ladder do better, even before they are born. Pregnant women, babies and children suffer from hunger and malnutrition far too often in the richest country in the world. Yet we still debate the merits of the federally funded WIC (Womens, Infants and Children) program, school lunches and food assistance to needy families.

Finally, we need to find a way to improve access to the health care system. The Medicaid program covers one in every three births and one in every three children in the United States, and it's still not enough. As some states balk at expanding Medicaid to cover many of the poorest uninsured, some are still talking about reducing funding to the already stretched program. There's no question that we have the capability, the knowledge and the resources to care for people. It's just a matter of doing it better.

There will be some who deny these results. Others will try to use them for political gain. That would be a mistake. We have to accept these findings and begin to work holistically to improve them. Being last just isn't the American way.

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The opinions expressed in this commentary are solely those of Aaron Carroll.

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U.S. tells computer users to disable Java software

WASHINGTON The U.S. Department of Homeland Security is advising people to temporarily disable the Java software on their computers to avoid potential hacking attacks.

The recommendation came in an advisory issued late Thursday, following up on concerns raised by computer security experts.

Experts believe hackers have found a flaw in Java's coding that creates an opening for criminal activity and other high-tech mischief.

CNET's Topher Kessler writes:

"The malware has currently been seen attacking Windows, Linux and Unix systems, and while so far has not focused on OS X, may be able to do so given OS X is largely similar to Unix and Java is cross-platform.

Even though the exploit has not been seen in OS X, Apple has taken steps to block it by issuing an update to its built-in XProtect system to block the current version of the Java 7 runtime and require users install an as of yet unreleased version of the Java runtime.

Luckily with the latest versions of Java, users who need to keep it active can change a couple of settings to help secure their systems. Go to the Java Control Panel that is installed along with the runtime, and in the Security section uncheck the option to "Enable Java content in the browser," which will disable the browser plug-in. This will prevent the inadvertent execution of exploits that may be stumbled upon when browsing the Web, and is a recommended setting for most people to do. If you need to see a Java applet on the Web, then you can always temporarily re-enable the plug-in.

The second setting is to increase the security level of the Java runtime, which can also be done in the same Security section of the Java Control Panel. The default security level is Medium, but you can increase this to High or Very High. At the High level, Java will prompt you for approval before running any unsigned Java code, and at the Very High level all Java code will require such approval, regardless of whether or not it is signed."

Java is a widely used technical language that allows computer programmers to write a wide variety of Internet applications and other software programs that can run on just about any computer's operating system.

Oracle Corp. bought Java as part of a $7.3 billion acquisition of the software's creator, Sun Microsystems, in 2010.

Oracle, which is based in Redwood Shores, Calif., had no immediate comment late Friday.

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Muscle mimic pulls electricity from wet surface

Electricity has been squeezed from a damp surface for the first time, thanks to a polymer film that curls up and moves – a bit like an artificial muscle – when exposed to moisture. The film could be used to run small, wearable devices on nothing but sweat, or in remote locations where conventional electricity sources aren't available.

When a dry polymer absorbs water, its molecular structure changes. This can, in principle, be converted into larger-scale movement, and in turn electricity. But previous attempts at creating a material powered by a moisture gradient – the difference in chemical potential energy between a wet region and a dry region - failed to produce a useful level of force.

These unsuccessful tries used a polymer called polypyrrole. Now Robert Langer and colleagues at the Massachusetts Institute of Technology have turned to the material again, embedding chains of it within another material, polyol-borate. This more complex arrangement mimics structures found in muscles as well as in plant tissues that bend in response to changes in humidity.

Flipping film

The result looks like an ordinary piece of thin black plastic, but when placed on a wet surface, something extraordinary happens. As the material absorbs water, its end curls away from the surface and the film becomes unstable, so it flips over. The ends have now dried out, so they are ready to absorb more water, and the whole process repeats itself. This continuous flipping motion lets the film travel across a suitably moist surface unaided.

Langer found that a 0.03-millimetre-thick strip, weighing roughly 25 milligrams, could curl up and lift a load 380 times its mass to a height of 2 millimetres. It was also able to move sideways when carrying a load about 10 times its mass.

To extract energy from this effect, Langer's team added a layer of piezoelectric material – one which produces electricity when squeezed. When this enhanced film, weighing about 100 milligrams, flipped over, it generated an output of 5.6 nanowatts – enough to power a microchip in sleep mode.

Electricity from sweat

Though the output is small, it is proof that electricity can be extracted from a water gradient. "To the extent of our knowledge, we are the first to utilise a water gradient, without a pressure gradient, to generate electricity," says Langer.

Large-scale energy harvesting is unlikely as the size of the device needed would be impractical, but it could be used to power small devices such as environmental monitoring systems in remote locations. "It will be interesting for applications where the amount of energy needed may be low but where access to energy may be difficult," says Peter Fratzl at the Max-Planck Institute of Colloids and Interfaces in Potsdam, Germany, who was not involved in the work.

Another application, Langer suggests, would be to place the film inside the clothing of joggers or athletes. The evaporation of sweat could generate enough electricity to power sensors monitoring blood pressure and heart rate.

Journal reference: Science, DOI 10.1126/science.1230262

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