Tennis: Serena, Murray suck it up to reach sweet 16

MELBOURNE: Serena Williams and Victoria Azarenka came through their first uncomfortable moments and Andy Murray was also tested before reaching the Australian Open's last 16 on Saturday.

Williams, eyeing a calendar-year Grand Slam, was broken for the first time in the tournament by Japanese number one Ayumi Morita, before recovering from 0-3 down in the second set to win 6-1, 6-3.

Defending champion Azarenka screamed at herself and thrashed her racquet before overcoming an unexpectedly stiff challenge by America's Jamie Hampton, who bravely played through severe back pain.

Argentina's Juan Martin Del Potro, seeded six, became the tournament's biggest casualty when the 2009 US Open champion slumped to a five-set defeat to unseeded Frenchman Jeremy Chardy.

Jo-Wilfried Tsonga and Richard Gasquet also went through, and with Gilles Simon playing Gael Monfils later France was assured of having four men in the fourth round, equalling their best performance at the tournament.

In the most competitive day so far, Murray extended his Grand Slam winning streak to 10 matches but not before a thorough workout from hitting partner Berankis, and he let his frustrations show during the 6-3, 6-4, 7-5 win.

The world number three trailed by a break of serve in the second set and appeared agitated at various stages, hitting his racquet on the court and yelling at his courtside box.

Murray served for the match at 5-4 in the third set but Berankis, the world number 110, broke back. But the 22-year-old dropped his next service game and Murray made no mistake in his second attempt at closing the victory.

The Olympic and US Open champion will next face the winner of the all-French affair between Monfils and Simon.

"I was struggling," Murray said. "He (Berankis) was making me feel pretty frustrated. We know each other well and we have practised together. He was making me feel pretty uncomfortable out there."

Williams unleashed her fastest ever serve, a 207 kilometres per hour (128 mph) bullet which equalled a speed clocked in round two against Garbine Muguruza, as she subdued the challenge of Morita.

"I feel today was actually a really good match for me," said Williams, a five-time winner at Melbourne Park and holder of 15 Grand Slam titles.

"I was involved in a lot of longer points, something I definitely wanted. I feel good. I hope I can keep this level up and go higher."

Azarenka admitted she needed to improve "everything" to successfully defend her title after surviving a scare against injured American Hampton, who winced as she played and was close to tears from the pain.

"It was definitely tough," said Azarenka, who won 6-4, 4-6, 6-2 and next plays Elena Vesnina. She is on course to meet Caroline Wozniacki in the quarter-finals.

"It's always good to know you can battle through not playing well, not feeling great."

World number seven Del Potro won four titles last year and dropped just 13 games in the first two rounds, but he found Chardy in inspired form and couldn't recover after going two sets down, finally succumbing in five.

Italy's Andreas Seppi ousted 12th seed Marin Cilic, but Tsonga found it easier with a straight-sets win over Blaz Kavcic, who was on an IV drip just two days ago after playing a five-hour marathon in intense heat.

In the prime-time evening match, four-time champion Roger Federer was due to play Australian upstart Bernard Tomic as he seeks to extend his record number of Grand Slam titles to 18.

-AFP/ac

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Crave Ep. 105: How to clip your nails in space

How to clip your nails in space, Ep. 105

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This week on Crave, we're back from
CES with a look at some of the wackier stuff we spotted at the show. Then, Canadian astronaut Christopher Hadfield gives us a highly important grooming lesson on the safest way to clip our nails in outer space, and the Hal 9000 computer replica from ThinkGeek refuses to cooperate.

Crave stories:

- From iPad toilets to alien apps, CES brims with oddities

- I took a power drill to an iPhone at CES

- Electric ZBoard is controlled with your weight

- Get ready to program! Lego's Mindstorms EV3 robots are here

- The mind-controlled helicopter from Puzzlebox

- How to clip your fingernails in space without inhaling them

- Movie-accurate HAL 9000 bosses you around the house

- Vroom vroom: Mario Kart gets real-life run

Social networking:

- Stephen on Twitter

- Stephen on Google+

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Attack at Algeria Gas Plant Heralds New Risks for Energy Development

The siege by Islamic militants at a remote Sahara desert natural gas plant in Algeria this week signaled heightened dangers in the region for international oil companies, at a time when they have been expanding operations in Africa as one of the world's last energy frontiers. (See related story: "Pictures: Four New Offshore Drilling Frontiers.")

As BP, Norway's Statoil, Italy's Eni, and other companies evacuated personnel from Algeria, it was not immediately clear how widely the peril would spread in the wake of the hostage-taking at the sprawling In Amenas gas complex near the Libyan border.

Map by National Geographic

Algeria, the fourth-largest crude oil producer on the continent and a major exporter of natural gas and refined fuels, may not have been viewed as the most hospitable climate for foreign energy companies, but that was due to unfavorable financial terms, bureaucracy, and corruption. The energy facilities themselves appeared to be safe, with multiple layers of security provided both by the companies and by government forces, several experts said. (See related photos: "Oil States: Are They Stable? Why It Matters.")

"It is particularly striking not only because it hasn't happened before, but because it happened in Algeria, one of the stronger states in the region," says Hanan Amin-Salem, a senior manager at the industry consulting firm PFC Energy, who specializes in country risk. She noted that in the long civil war that gripped the country throughout the 1990s, there had never been an attack on Algeria's energy complex. But now, hazard has spread from weak surrounding states, as the assault on In Amenas was carried out in an apparent retaliation for a move by French forces against the Islamists who had taken over Timbuktu and other towns in neighboring Mali. (See related story: "Timbuktu Falls.")

"What you're really seeing is an intensification of the fundamental problem of weak states, and empowerment of heavily armed groups that are really well motivated and want to pursue a set of aims," said Amin-Salem. In PFC Energy's view, she says, risk has increased in Mauritania, Chad, and Niger—indeed, throughout Sahel, the belt that bisects North Africa, separating the Sahara in the north from the tropical forests further south.

On Thursday, the London-based corporate consulting firm Exclusive Analysis, which was recently acquired by the global consultancy IHS, sent an alert to clients warning that oil and gas facilities near the Libyan and Mauritanian borders and in Mauritania's Hodh Ech Chargui province were at "high risk" of attack by jihadis.

"A Hot Place to Drill"

The attack at In Amenas comes at a time of unprecedented growth for the oil industry in Africa. (See related gallery: "Pictures: The Year's Most Overlooked Energy Stories.") Forecasters expect that oil output throughout Africa will double by 2025, says Amy Myers Jaffe, executive director of the energy and sustainability program at the University of California, Davis, who has counted 20 rounds of bidding for new exploration at sites in Africa's six largest oil-producing states.

Oil and natural gas are a large part of the Algerian economy, accounting for 60 percent of government budget revenues, more than a third of GDP and more than 97 percent of its export earnings. But the nation's resources are seen as largely undeveloped, and Algeria has tried to attract new investment. Over the past year, the government has sought to reform the law to boost foreign companies' interests in their investments, although those efforts have foundered.

Technology has been one of the factors driving the opening up of Africa to deeper energy exploration. Offshore and deepwater drilling success in the Gulf of Mexico and Brazil led to prospecting now under way offshore in Ghana, Mozambique, and elsewhere. (See related story: "New Oil—And a Huge Challenge—for Ghana.") Jaffe says the Houston-based company Anadarko Petroleum has sought to transfer its success in "subsalt seismic" exploration technology, surveying reserves hidden beneath the hard salt layer at the bottom of the sea, to the equally challenging seismic exploration beneath the sands of the Sahara in Algeria, where it now has three oil and gas operations.

Africa also is seen as one of the few remaining oil-rich regions of the world where foreign oil companies can obtain production-sharing agreements with governments, contracts that allow them a share of the revenue from the barrels they produce, instead of more limited service contracts for work performed.

"You now have the technology to tap the resources more effectively, and the fiscal terms are going to be more attractive than elsewhere—you put these things together and it's been a hot place to drill," says Jaffe, who doesn't see the energy industry's interest in Africa waning, despite the increased terrorism risk. "What I think will happen in some of these countries is that the companies are going to reveal new securities systems and procedures they have to keep workers safe," she says. "I don't think they will abandon these countries."

This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.

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Armstrong Tearful Over Telling Kids Truth

Lance Armstrong, 41, began to cry today as he described finding out his son Luke, 13, was publicly defending him from accusations that he doped during his cycling career.

Armstrong said that he knew, at that moment, that he would have to publicly admit to taking performance-enhancing drugs and having oxygen-boosting blood transfusions when competing in the Tour de France. He made those admissions to Oprah Winfrey in a two-part interview airing Thursday and tonight.

"When this all really started, I saw my son defending me, and saying, 'That's not true. What you're saying about my dad? That's not true,'" Armstrong said, tearing up during the second installment of his interview tonight. "And it almost goes to this question of, 'Why now?'

"That's when I knew I had to talk," Armstrong said. "He never asked me. He never said, 'Dad, is this true?' He trusted me."

He told Winfrey that he sat down with his children over the holidays to come clean about his drug use.

"I said, 'Listen, there's been a lot of questions about your dad, about my career and whether I doped or did not dope,'" he said he told them. "'I always denied that. I've always been ruthless and defiant about that, which is why you defended me, which makes it even sicker' I said, 'I want you to know that it's true.'"

He added that his mother was "a wreck" over the scandal.

Armstrong said that the lowest point in his fall from grace and the top of the cycling world came when his cancer charity, Livestrong, asked him to consider stepping down.

George Burns/Harpo Studios, Inc.

Lance Armstrong-Winfrey Interview: How Honest Was He? Watch Video

Lance Armstrong-Winfrey Interview: Doping Confession Watch Video

After the U.S. Anti-Doping Agency alleged in October that Armstrong doped throughout his reign as Tour de France champion, Armstrong said, his major sponsors -- including Nike, Anheuser Busch and Trek -- called one by one to end their endorsement contracts with him.

"Everybody out," he said. "Still not the most humbling moment."

Then came the call from Livestrong, the charity he founded at age 25 when he was diagnosed with testicular cancer.

"The story was getting out of control, which was my worst nightmare," he said. "I had this place in my mind that they would all leave. The one I didn't think would leave was the foundation.

"That was most humbling moment," he said.

Armstrong first stepped down as chairman of the board for the charity before being asked to end his association with the charity entirely. Livestrong is now run independently of Armstrong.

"I don't think it was 'We need you to step down,' but, 'We need you to consider stepping down for yourself,'" he said, recounting the call. "I had to think about that a lot. None of my kids, none of my friends have said, 'You're out,' and the foundation was like my sixth child. To make that decision, to step aside, that was big."

In Thursday's interview installment, the seven-time winner of the Tour de France admitted publicly for the first time that he doped throughout his career, confirming after months of angry denials the findings of the U.S. Anti-Doping Agency, which stripped him of his titles in October.

He told Winfrey that he was taking the opportunity to confess to everything he had done wrong, including for years angrily denying claims that he had doped.

READ MORE: Armstrong Admits to Doping

WATCH: Armstrong's Many Denials Caught on Tape

READ MORE: 10 Scandalous Public Confessions

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Wind turbines supercharged with superconductors

WIND turbines may soon get a supercharge. Turbines wound with superconducting wire instead of regular copper could turn today's 2 to 3-megawatt generators into 10-megawatt powerhouses, say teams in Europe and the US that are racing to produce the machines.

At heart, a wind turbine is simple - a series of wire coils attached to the rotor blade spin in the presence of strong magnetic fields, provided by stationary magnets. This generates a current, but the resistance in copper wire limits the amount of current that can flow through the coils. Making the coils from a resistance-free superconductor would cut down on weight and boost power generation.

Using superconductors will not be easy, though, partly due to the ultra-low temperatures they require. Developing a coil that can be cooled while simultaneously rotating with the turbine blades is a big challenge. A research project dubbed Suprapower, funded by the European Union, kicked off in December to address this problem.

Holger Neumann at the Karlsruhe Institute of Technology in Germany and other members of the Suprapower consortium are betting on a new "high temperature" superconductor, magnesium diboride, which works at 20 kelvin. "It's light, easily made into wires and is really cheap compared with the old niobium-titanium superconductors, which needed cooling way down to 4 kelvin," Neumann says. That temperature difference might not sound much but it means, crucially, that cooling the magnesium diboride superconductor requires just one-seventh of the power.

The team will also have to build a casing, called a cryostat, in which the superconducting coil will be kept chilled by gaseous helium. This is tricky as its supporting structure will act as a "heat bridge" to the warmer world outside. Neumann thinks they have cracked the problem with a novel arrangement of an outer vacuum vessel and insulating inner layers of plastic and titanium.

But however good their technology, they have to contend with an unusual property of superconductors - when the wires sweep through a magnetic field, their ability to generate current is reduced. That means more coil turns would be needed to make up for the current loss, which would negate some of the weight savings and make the turbines more expensive to construct.

"Magnetic flux lines interfere with the wires' ability to transport electricity, lowering its performance," says Venkat Selvamanickam at the University of Houston, Texas, where the US government is funding work via its Advanced Research Projects Agency - Energy. Selvamanickam's team thinks they have found a way to solve this problem - adding 5-nanometre-wide particles of barium zirconate to the wire. The team found that this "pins" the magnetic flux lines in place as the wires sweep through the field, preventing the formation of swirling magnetic vortices that reduce current flow. So far they have eliminated 65 per cent of this current-limiting problem.

The US team claims to be within a few years of building their own 10-megawatt wind turbine, and says that their techniques could make superconducting wires attractive for distributing electricity as well as generation.

"If we can demonstrate this superconducting-wire technology in a wind turbine, we think it's more likely that it will make its way into the power cables of the electricity grid," says Selvamanickam.

Merrily spins as laser looks on

Lasers could slash wind-turbine power outages, say engineers at Chonbuk National University in South Korea. If the bolts securing turbine blades to a rotor begin to loosen, or blade mass is lost due to a lightning strike, a blade can strike the turbine tower and fall off. But monitoring for when a blade starts to go out of alignment is expensive as it involves peppering each blade with strain sensors.

A cheaper answer is to place a laser on the tower and instead measure the reflection time from every blade as it passes by. This way, deviation of all the blades is measured using just one low-cost sensor (Smart Materials and Structures, doi.org/j62).

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

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Cycling: Livestrong "disappointed" by Armstrong's deception

WASHINGTON: Livestrong, the cancer charity founded by disgraced cyclist Lance Armstrong, said on Thursday it was "disappointed" that he had deceived the organization and many others about doping.

"We at the Livestrong Foundation are disappointed by the news that Lance Armstrong misled people during and after his cycling career, including us," it said after the broadcast of Armstrong's interview with Oprah Winfrey.

Armstrong, 41, used the interview to come clean for the first time about his use of performance enhancing drugs to win seven consecutive Tour de France races, after more than a decade of strident denials.

Prior to recording the interview on Monday in his hometown of Austin, Texas, Armstrong personally went to Livestrong headquarters to apologize to its staff -- and in the interview, he wore its iconic yellow fund-raising wristband.

"We accepted his apology in order to move on and chart a strong, independent course," the foundation said in its statement, received 40 minutes after the conclusion of part one of the broadcast, which will continue on Friday.

"Even in the wake of our disappointment, we also express our gratitude to Lance as a (cancer) survivor for the drive, devotion and spirit he brought to serving cancer patients and the entire cancer community," it said.

"Lance is no longer on the foundation's board, but he is our founder and we will always be grateful to him for creating and helping to build a foundation that has served millions struggling with cancer."

It added: "Our success has never been based on one person. It's based on the patients and survivors we serve every day who approach a cancer diagnosis with hope, courage and perseverance."

Armstrong founded Livestrong in 1997 after he underwent chemotherapy to overcome testicular cancer that had spread to his brain and other parts of his body.

He stepped down first as its chairman, then from its board of directors last year as the US Anti-Doping Agency, in a damning 1,000-page report, put him at the center of the biggest doping conspiracy in the annals of cycling.

Livestrong says it has served more than 2.5 million people affected by cancer and raised more than US$500 million since its founding to support cancer survivors. It does not contribute directly to cancer research.

- AFP/xq

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Crave giveaway: Laptop bag packed with CES 2013 swag

Gear, glorious gear. (Click to enlarge.)

(Credit:
James Martin/CNET)

Last year, readers liked our CES swag giveaway so much that we're doing one again this year -- in a big way. CNET staffers collected so many great goodies at CES 2013 that we have enough freebies for two separate giveaways.

This week's winner will score, among other prizes, an itty-bitty 1GB NewKube Kube MP3 player; a Moshi VersaCover hard-shell case with foldable cover and stand for the
iPad Mini; and a Twig bendable docking cable for the iPhone and
iPod.

From Casio, there's a flash drive that can be worn as a bracelet, and another little flash drive from Pepcom. Then there's a much-abridged version of "Frankenstein" by Mary Shelley. It was automatically shortened using a language heuristics engine from Stremor, maker of the TLDR (too long; didn't read) content-condensing plug-in for Chrome.

Oh, and did we mention the "Always On" and "Apple Byte" stickers signed, respectively, by hosts Molly Wood and Brian Tong? It all comes in a sturdy SwissGear CheckPoint-friendly computer backpack from Wenger. Woot.

Altogether, this swag stash would run you about $220, but you have the chance to get the whole thing for free. How? Well, there are a couple of rules here and there, so please read carefully. And be sure to check back next Friday for part two of our awesome-stuff-from-CES giveaway.

• Register as a CNET user. Go to the top of this page and hit the Join CNET link to start the registration process. If you're already registered, there's no need to register again.


• Leave a comment below. You can leave whatever comment you want. If it's funny or insightful, it won't help you win, but we're trying to have fun here, so anything entertaining is appreciated.


• Leave only one comment. You may enter for this specific giveaway only once. If you enter more than one comment, you will be automatically disqualified.
  


• The winner will be chosen randomly. The winner will receive one (1) CES swag bag, with a retail value of about $220.


• If you are chosen, you will be notified via e-mail. The winner must respond within three days of the end of the sweepstakes. If you do not respond within that period, another winner will be chosen.


• Entries can be submitted until Monday, January 21, at 12 p.m. ET.

And here's the disclaimer that our legal department said we had to include (sorry for the caps, but rules are rules):

NO PURCHASE NECESSARY TO ENTER OR WIN. A PURCHASE WILL NOT INCREASE YOUR CHANCES OF WINNING. YOU HAVE NOT YET WON. MUST BE LEGAL RESIDENT OF ONE OF THE 50 UNITED STATES OR D.C., 18 YEARS OLD OR AGE OF MAJORITY, WHICHEVER IS OLDER IN YOUR STATE OF RESIDENCE AT DATE OF ENTRY INTO SWEEPSTAKES. VOID IN PUERTO RICO, ALL U.S. TERRITORIES AND POSSESSIONS AND WHERE PROHIBITED BY LAW. Sweepstakes ends at 12 p.m. ET on Monday, January 21, 2013. See official rules for details.

Good luck.

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Opinion: Lance One of Many Tour de France Cheaters

Editor's note: England-based writer and photographer Roff Smith rides around 10,000 miles a year through the lanes of Sussex and Kent and writes a cycling blog at: www.my-bicycle-and-I.co.uk

And so, the television correspondent said to the former Tour de France champion, a man who had been lionised for years, feted as the greatest cyclist of his day, did you ever use drugs in the course of your career?

"Yes," came the reply. "Whenever it was necessary."

"And how often was that?" came the follow-up question.

"Almost all the time!"

This is not a leak of a transcript from Oprah Winfrey's much anticipated tell-all with disgraced cyclist Lance Armstrong, but instead was lifted from a decades-old interview with Fausto Coppi, the great Italian road cycling champion of the 1940s and 1950s.

To this day, though, Coppi is lauded as one of the gods of cycling, an icon of a distant and mythical golden age in the sport.

So is five-time Tour winner Jacques Anquetil (1957, 1961-64) who famously remarked that it was impossible "to ride the Tour on mineral water."

"You would have to be an imbecile or a crook to imagine that a professional cyclist who races for 235 days a year can hold the pace without stimulants," Anquetil said.

And then there's British cycling champion Tommy Simpson, who died of heart failure while trying to race up Mont Ventoux during the 1967 Tour de France, a victim of heat, stress, and a heady cocktail of amphetamines.

All are heroes today. If their performance-enhancing peccadillos are not forgotten, they have at least been glossed over in the popular imagination.

As the latest chapter of the sorry Lance Armstrong saga unfolds, it is worth looking at the history of cheating in the Tour de France to get a sense of perspective. This is not an attempt at rationalisation or justification for what Lance did. Far from it.

But the simple, unpalatable fact is that cheating, drugs, and dirty tricks have been part and parcel of the Tour de France nearly from its inception in 1903.

Cheating was so rife in the 1904 event that Henri Desgrange, the founder and organiser of the Tour, declared he would never run the race again. Not only was the overall winner, Maurice Garin, disqualified for taking the train over significant stretches of the course, but so were next three cyclists who placed, along with the winner of every single stage of the course.

Of the 27 cyclists who actually finished the 1904 race, 12 were disqualified and given bans ranging from one year to life. The race's eventual official winner, 19-year-old Henri Cornet, was not determined until four months after the event.

And so it went. Desgrange relented on his threat to scrub the Tour de France and the great race survived and prospered-as did the antics. Trains were hopped, taxis taken, nails scattered along the roads, partisan supporters enlisted to beat up rivals on late-night lonely stretches of the course, signposts tampered with, bicycles sabotaged, itching powder sprinkled in competitors' jerseys and shorts, food doctored, and inkwells smashed so riders yet to arrive couldn't sign the control documents to prove they'd taken the correct route.

And then of course there were the stimulants-brandy, strychnine, ether, whatever-anything to get a rider through the nightmarishly tough days and nights of racing along stages that were often over 200 miles long. In a way the race was tailor-made to encourage this sort of thing. Desgrange once famously said that his idea of a perfect Tour de France would be one that was so tough that only one rider finished.

Add to this the big prizes at a time when money was hard to come by, a Tour largely comprising young riders from impoverished backgrounds for whom bicycle racing was their one big chance to get ahead, and the passionate following cycling enjoyed, and you had the perfect recipe for a desperate, high stakes, win-at-all-costs mentality, especially given the generally tolerant views on alcohol and drugs in those days.

After World War II came the amphetamines. Devised to keep soldiers awake and aggressive through long hours of battle they were equally handy for bicycle racers competing in the world's longest and toughest race.

So what makes the Lance Armstrong story any different, his road to redemption any rougher? For one thing, none of the aforementioned riders were ever the point man for what the U.S. Anti-Doping Agency has described in a thousand-page report as the most sophisticated, cynical, and far-reaching doping program the world of sport has ever seen-one whose secrecy and efficiency was maintained by ruthlessness, bullying, fear, and intimidation.

Somewhere along the line, the casualness of cheating in the past evolved into an almost Frankenstein sort of science in which cyclists, aided by creepy doctors and trainers, were receiving blood transfusions in hotel rooms and tinkering around with their bodies at the molecular level many months before they ever lined up for a race.

To be sure, Armstrong didn't invent all of this, any more than he invented original sin-nor was he acting alone. But with his success, money, intelligence, influence, and cohort of thousand-dollar-an-hour lawyers-and the way he used all this to prop up the Lance brand and the Lance machine at any cost-he became the poster boy and lightning rod for all that went wrong with cycling, his high profile eclipsing even the heads of the Union Cycliste Internationale, the global cycling union, who richly deserve their share of the blame.

It is not his PED popping that is the hard-to-forgive part of the Lance story. Armstrong cheated better than his peers, that's all.

What I find troubling is the bullying and calculated destruction of anyone who got in his way, raised a question, or cast a doubt. By all accounts Armstrong was absolutely vicious, vindictive as hell. Former U.S. Postal team masseuse Emma O'Reilly found herself being described publicly as a "prostitute" and an "alcoholic," and had her life put through a legal grinder when she spoke out about Armstrong's use of PEDs.

Journalists were sued, intimidated, and blacklisted from events, press conferences, and interviews if they so much as questioned the Lance miracle or well-greased machine that kept winning Le Tour.

Armstrong left a lot of wreckage behind him.

If he is genuinely sorry, if he truly repents for his past "indiscretions," one would think his first act would be to try to find some way of not only seeking forgiveness from those whom he brutally put down, but to do something meaningful to repair the damage he did to their lives and livelihoods.

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Armstrong Admits to Doping, 'One Big Lie'

Lance Armstrong, formerly cycling's most decorated champion and considered one of America's greatest athletes, confessed to cheating for at least a decade, admitting on Thursday that he owed all seven of his Tour de France titles and the millions of dollars in endorsements that followed to his use of illicit performance-enhancing drugs.

After years of denying that he had taken banned drugs and received oxygen-boosting blood transfusions, and attacking his teammates and competitors who attempted to expose him, Armstrong came clean with Oprah Winfrey in an exclusive interview, admitting to using banned substances for years.

"I view this situation as one big lie that I repeated a lot of times," he said. "I know the truth. The truth isn't what was out there. The truth isn't what I said.

"I'm a flawed character, as I well know," Armstrong added. "All the fault and all the blame here falls on me."

In October, the U.S. Anti-Doping Agency issued a report in which 11 former Armstrong teammates exposed the system with which they and Armstrong received drugs with the knowledge of their coaches and help of team physicians.

George Burns/Courtesy of Harpo Studios, Inc./AP Photo

Lance Armstrong Admits Using Performance-Enhancing Drugs Watch Video

Lance Armstrong's Oprah Confession: The Consequences Watch Video

The U.S. Postal Service Cycling Team "ran the most sophisticated, professionalized and successful doping program that sport has ever seen," USADA said in its report.

As a result of USADA's findings, Armstrong was stripped of his Tour de France titles. Soon, longtime sponsors including Nike began to abandon him, too.

READ MORE: Did Doping Cause Armstrong's Cancer?

Armstrong said he was driven to cheat by a "ruthless desire to win."

He told Winfrey that his competition "cocktail" consisted of EPO, blood transfusions and testosterone, and that he had previously used cortisone. He would not, however, give Winfrey the details of when, where and with whom he doped during seven winning Tours de France between 1999 and 2005.

He said he stopped doping following his 2005 Tour de France victory and did not use banned substances when he placed third in 2009 and entered the tour again in 2010.

"It was a mythic perfect story and it wasn't true," Armstrong said of his fairytale story of overcoming testicular cancer to become the most celebrated cyclist in history.

READ MORE: 10 Scandalous Public Confessions

PHOTOS: Olympic Doping Scandals: Past and Present

PHOTOS: Tour de France 2012

Armstrong would not name other members of his team who doped, but admitted that as the team's captain he set an example. He admitted he was "a bully" but said there "there was a never a directive" from him that his teammates had to use banned substances.

"At the time it did not feel wrong?" Winfrey asked.

"No," Armstrong said. "Scary."

"Did you feel bad about it?" she asked again.

"No," he said.

Armstrong said he thought taking the drugs was similar to filling his tires with air and bottle with water. He never thought of his actions as cheating, but "leveling the playing field" in a sport rife with doping.

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Kinect sensor poised to leap into everyday life

WHEN Microsoft's Kinect gaming sensor first exploded onto the gaming scene in 2010, it wasn't long before people started getting excited about what it might make possible.

But despite some imaginative hacks, and even a stint in the operating theatre, the breakthrough depth-sensing technology that made Kinect such a success has had a hard time moving beyond the lab or living room. Now the firm behind the 3D sensor at the heart of the Kinect system is pushing to make the leap into a wide variety of consumer fields far removed from gaming.

At the International Consumer Electronics Show (CES) in Las Vegas last week, Israeli firm PrimeSense showed how their depth sensor, called Carmine, is being put to use in myriad applications. And a smaller version of the sensor may soon be sitting in your smartphone or tablet.

"We're taking it way beyond the living room and putting it into almost anything," says PrimeSense's head of commercial markets, Ohad Shvueli.

Retail is the sector that looks to benefit the most. One firm, Shopperception, uses the sensor to constantly scan the area in front of the shelves in a supermarket to gauge shoppers' behaviour. Because the sensor can track arm movements - just like in Kinect - it knows when a shopper has picked up a certain product. The data is compiled and retailers can see a "heat map" of exactly where on a shelf most customers are reaching.

The sensor is also being put to use by Portuguese firm CoVii, which has written software that lets the sensor turn any simple flat-screen TV or monitor into a "touch-sensitive" device - only the user doesn't have to touch the screen. Because it can detect how far a user's hand is from the screen, it lets people interact by hovering their finger a set distance from the surface - something that would be perfect for interactive advertising displays that could be kept safe behind glass windows.

Meanwhile, California-based Matterport has been using the sensor to cheaply create an accurate, 360-degree 3D scan of a room that is complete within 10 minutes. Such mapping would make buying furniture for your living room a cinch, for example.

Styku, also at CES, has been using the sensor to create a virtual changing room where online shoppers scan their bodies at home and create an avatar to try on outfits to see how they look.

Sean Murphy, an industry analyst for the Consumer Electronics Association, which organises CES, says 3D sensing and gestural control are poised to become a much bigger part of our lives. "It really is the next frontier for getting people interacting with the world around them," he says.

Shvueli agrees, and is pushing hard for the technology to mature into a mainstay of our everyday lives. "Despite Kinect, 3D sensing is a non-existent market at the moment," he says. "We are in the very early stages of making it integrated into everything."

To that end, he says a new version of the sensor, called Capri, will bring depth-sensing to mobile devices. Capri is far smaller than the Carmine sensor, thanks to better heat dissipation. "Once Capri is in a tablet or a smartphone it is going to break the mass market wide open," Shvueli claims. He expects to have Capri sensors installed in commercially available devices next year.

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