Angels of Karachi: The Pakistani women who risk death every day to vaccinate children against polio

'I continued after my niece was shot. We all  die one day, so why not as a brave person?'

ANDREW BUNCOMBE 

As of 2004, when there were 30 million children in Pakistan under five, about 200,000 health workers were required for a vaccination campaign that was carried out eight times a year. 

For a country where vaccines are widely available, Pakistan’s recent record on immunization is poor with only half of its children fully immunized. 100,000 trained Lady Health Workers in Pakistan risk death every day to vaccinate children against polio to increase immunization coverage rates the hard way – by walking door to door.

Rabail Mehar was at work when she got the news. Four women, polio vaccination workers like her, had been shot dead at three locations in Karachi within the space of 20 minutes. A fifth female worker had been killed in Peshawar.

“I started crying,” said Ms Mehar, who had only been in the position a month. “I decided I was going to quit.”
As it was, the 25-year-old did not resign on that dark, murderous day last December. Even though her mother and father wanted her to quit, that evening, with a “cool head”, she realised her role as part of the country’s campaign to end polio was more to her than just a job. It took three days to win over her parents.
Across Pakistan there are thousands of women like Rabail Mehar. The battle to rid the country of polio is a team effort involving the central and provincial governments, private organisations and charities, Unicef and the World Health Organisation.
But on the frontline, where teams go door-to-door persuading often reluctant families to administer drops of vaccine to their children, it is women who are leading the fight. Frequently they risk their lives to do so.
There are lots of men out there too, but officials say women have generally shown themselves to be more effective at delivering the message that the vaccine can save a child from a debilitating disease. “Females feel more of a sense of responsibility,” said Dr Syed Saifur Rehman, a senior government official in Karachi. “They have better access. They are well dressed.”
Along with Afghanistan and Nigeria, Pakistan is one of three countries where polio remains endemic. In 2011 there were 198 confirmed cases, in 2012 there were 58 while this year there have been 24. The vast majority occur in the Federally Administered Tribal Areas and Balochistan.
But Karachi, with a shifting population of up to 25 million people and with large, displaced communities from Afghanistan and the tribal areas, is another of the battlegrounds. Two cases have been confirmed in 2013, the most recent on 8 August. It is 10.30am on another morning and the vaccination team has arrived at a shanty community opposite Karachi University, which is home to around 3,000 of the city’s most desperately poor. A mixture of Muslims and Hindus originally from the rural interior of Sindh province, the community here has no roads, drains or sanitation. “I want all the women to come out and bring your children,” says a man with a loud-hailer. “Be quick, we have limited time.”
Among the team is a young female supervisor wearing a blue scarf, pink nail polish and possessing a degree in international relations. The 27-year-old, who asked she be identified by the initial, S, said she was from a naval family and had two brothers and six sisters. After the attacks in December, S also came under pressure from her family to give up her post. They wanted her to take up teaching. She also refused. Now she supervises a team of “social mobilisers” who liaise with the migrant community and ensure the mothers don’t skip sessions.
At this location, most families agree to bring out their children even if they do not understand why the health workers are making such an effort – especially given they receive no other government services. “They come and do the vaccination. We don’t know about these things,” said Sarwan, 35, who sells fruit. A volunteer paints the nail of a child’s little finger with a purple marker to prove they were vaccinated against polio.
Elsewhere things are not so simple. In some communities, especially in the remote and detached tribal areas, there is a commonly-held belief, spread by some clerics, that vaccinations are part of a Western plot to sterilise Muslims. Officials say this belief, and the number of cases of vaccine “refusals”, jumped in the aftermath of the US operation to kill Osama bin Laden when it emerged the CIA had recruited a Pakistani doctor, Shakil Afridi.
Dr Afridi had been tasked with establishing a fake vaccination campaign to obtain DNA samples from children living in Bin Laden’s Abbottabad compound. In 2012,  Dr Afridi was jailed for 33 years after he was accused of treason. Last week a judge ordered a retrial.
Another aspect of the US’s so-called war on terror in Pakistan that has hindered the polio campaign is the CIA drone operation. Last year, the Taliban said polio workers could not operate in the mountainous area of Waziristan until the strikes were halted.
The decision meant 240,000 children under the age of five missed out on the vaccine. Sixteen polio cases have been detected in North and South Waziristan since the Taliban ban. Tests are being conducted on a further 42 suspected cases. “It’s real,” said a senior member of the Pakistan polio team, part of the Global Polio Eradication Initiative, who asked not to be identified. “If the drone strikes stopped, the polio campaign would improve.”
The suspicion aroused by Dr Afridi and the spectre of a US plot is underscored by the case of 32-year-old Usman, a labourer from the Bin Qasim Town neighbourhood. Even though Mr Usman suffered from polio as a child, he decided not to vaccinate his three-year-old son, Musharraf Khan, in the aftermath of the Dr Afridi affair.
“I saw that this job was being done by the CIA and its allies,” said Mr Usman, seated in an office of the Karachi health department.
Late last year, Musharraf Khan started complaining of weakness and fever. On 16 January he was positively identified as having polio. For several weeks it appeared he would be left disabled but intensive rehabilitation has seen his mobility return. Doctors say it must have been a mild case.
Most are not so lucky. Dr Abdul Samad, a WHO official with responsibility for the city’s northwestern Gadap Town area, pulled out his phone to play a video clip of one-year-old Sana Farishta, who was positively tested for polio on 8 August.
On the clip, the little girl’s father, Noor Mohammad, held her up but while she could put her weight on her right leg, the left flopped. Officials say the she had received nine dosages of the vaccine. They are unsure whether she is one of the rare cases in which the vaccine can be ineffective or if the cold-chain for the drug had been broken rendering it useless.
To counter public suspicion and a perception that taking the vaccine may somehow be unIslamic, the authorities have turned to influential members of the community. None have played a more important role than the Muslim clerics who have lent their support. Maulana Bilal Ahmed, a cleric in the Gulshan-e-Iqbal area in Karachi, said he had noticed the incidence of polio had reduced where children were given the vaccination. He now tells people to ensure their youngsters are vaccinated.
He also debates the issue with other clerics. “I always ask them for proof that the vaccine is harmful,” he said. “They cannot provide any, so that means I always win.” Even so, there are many within Pakistan who disagree. In the last 13 months there have been 24 attacks on vaccination teams.  A total of 17 health workers and five police escorts killed and 14 injured. 
While Ms Mehar’s parents were initially concerned about her safety, they now accept she is dedicated to the job. As it is, she is now the family’s sole earner, with the responsibility for five sisters and a brother. The eldest sibling, 18-year-old Naila, wants to go to medical college.
At the family’s home, Naila said that after the attacks in December, they wanted Ms Mehar to find a different job. “Because of her gift for this work, she carried out. She means everything to us,” she said.
As a full-time social mobiliser, Ms Mehar earns around £120 a month. Many of the women involved in the campaign are recruited on a daily basis and paid as little as £1.50.
Among the four polio workers killed in Karachi last December, at least two were paid on this ad hoc basis. Fahida and Madeha Shah, who were relatives, had set out close to their home in the Landhi Town district, when they were shot and killed, reportedly by gunmen on a motorbike. Gulnaz Sherazi, 30, who was Madeha Shah’s aunt and who is the campaign supervisor in the area, heard the gunshots. After some delay, she went to the scene.
When she got there she discovered Madeha lying in an ambulance. She assumed she was unconscious and reached out to touch her face only to find it was already cool. Ms Sherazi said Madeha was divorced and had a three-year-old child, who was now being raised by their grandmother.
Ms Sherazi said she had also received threats and after seeing her niece’s body lying in the ambulance she thought she would give up her job. She too decided to continue.
“We all die one day,” she said. “So why not die as a brave person?”

Source: Source 1
                 Source 2

Frank Hayes: Died at the Reins

A modern steeplechase race. Photo by John Holloway
A modern-day example of a steeplechase race. Photo by John Holloway
June 4, 1923 was an unusual day for thirty-five-year-old jockey Frank Hayes.
Hayes was riding a bay mare named Sweet Kiss, a horse owned by Miss A. M. Frayling, in the steeplechase race at Belmont Park on Long Island, New York. Steeplechase is an interesting race as it is as much a speed race as it is an obstacle course. In this race, the horse and rider have to make jumps over fences and ditches of water. The particular race Hayes was participating in was a two-mile course. This was only his second time wearing racing silks. He was considered long shot with 20-1 odds.
The race was very close. The race favorite was J. S. Cosden, who was riding Gimme. Throughout the race, Gimme and Sweet Kiss were separated only by two or three lengths. It was a nail-biter. Rounding the last turn, Sweet Kiss almost collided with Gimme but was able to right himself.  With the finish line approaching, the two dug in. Sweet Kiss crossed over first by a length and a half. Both horses slowed into a walk. Hayes had won his first race!
The excitement and sweet taste of victory was short-lived. The spectators noticed that Hayes was bent over Sweet Kiss. The general thought was that he was adjusting a stirrup. Next thing they saw was Hayes dropping to the ground while the horse stepped over him and continued to walk. A crowd went to help Hayes, among them was Dr. John A. Voorhees the track’s physician. Dr. Voorhees quickly examined Hayes and pronounced him dead.
In a New York Times article dated the day after his day, said that he had actually dead right after crossing the finish line and bringing Sweet Kiss to a walk. However, others say differently. According to Guinness World Records, Hayes died during the race – before Sweet Kiss crossed the finish line. He is now cited as the only jockey to win a race while dead.
The official ruling was that he dead of heart disease. The New York Times also speculated that it was due to the rigorous training jockeys often do to maintain a certain weight level as well as the overall excitement of a big race – and, perhaps even, winning the race. So, June 4, 1923, was a bittersweet day for Frank Hayes.
Sources
Jockey Hayes, Victim of Heart Disease, Earns Goal But the Effort Kills Him : THE BROOKLYN DAILY EAGLE, New York.

New York Times, “Jockey Dies as He Wins His First Race; Hayes Collapses Passing the Winning Post,” June 5, 1923.
Guinness World Records, “First deceased jockey to win a race.”

Man, 40, suffers concussion after diving into shallow pool

In 2006, Derek Amato suffered a violent head injury after he dived into the shallow end of a swimming pool. He lost his memory,  35 percent hearing loss in one ear and headaches. But he grew an extraordinary musical talent. Amato found out that he could all of a sudden play piano -- and he could do it well.

Amato writes in a blog post, ” As I close my eyes, I found these black and white structures moving from left to right, which in fact would represents a fluid and continuous stream of musical notation in my mind. My fingers started to play the piano keys as if I had done it all of my life. I can't explain the feeling of wonder that overpowered my entire being, although I can tell you the appearance on my friend's face were enough to put us both in tears."

Dr. Darold Treffert from University of Wisconsin School of Medicine identified that he is in a condition of "acquired savant syndrome" -- a condition where a mental impairment results in superhuman skills, according to Popular Science.
And so, the 39-year-old sales trainer from Denver decided to drastically change his life and became a professional pianist.

Video Via TED TALK
This past August, Amato told his story in a TED Talk. When asked what he would do if he suddenly lost his musical gift, he said that he would still be equally grateful for the experience.
"I've had seven years [with this syndrome]. Not too many people get to see this much life in seven years. I've been pretty lucky," he told HuffPost Live. "Hey, if it goes away, I've had seven beautiful years to enjoy it."

Amato is a father of three. He lives in Colorado and, when he’s not making music, he enjoys fly fishing and philanthropy.

References:
WHEN BRAIN DAMAGE UNLOCKS THE GENIUS WITHIN
Man, 40, suffers concussion after diving into shallow pool

"Ladies' Night" Promotions Violate California Law

The hospitality industry is no stranger to the rules prohibiting discrimination in accommodations. The average restaurant or hotel operator is aware that the establishment cannot deny service to a patron on the basis of a protected status, such as race or gender. What appears to be less well known is that, at least in California, the same business establishments cannot discriminate by providing extra service to a protected status either. This fact is apparent by the continuing trend to hold “Ladies’ Night” events, or special discounts available only to women, for businesses from restaurants to car washes. 

State courts in California,MarylandPennsylvania and Wisconsin have ruled that ladies' night discounts are unlawful gender discrimination under state or local statutes.
These bonuses for female patrons may be useful in boosting business, but if the same businesses refuse service or the same discounts to a male patron, they may be in for a rude awakening when they receive a complaint for statutory penalties for violation of California’s Unruh Act and/or The Gender Tax Repeal Act.
In 1959, California enacted the Unruh Civil Rights Act to set forth what now seems like the basic principle that a business establishment cannot discriminate on the basis of sex, race, color, religion, ancestry, national origin, disability, medical condition, genetic information, marital status, or sexual orientation1. As the illustrative list of protected statuses demonstrates, the Act is intended to protect all persons from arbitrary discrimination.
The Act specifically makes any violation of the Americans with Disabilities Act (“ADA”) a violation of the Act. But outside of this strict liability requirement for violations of the ADA, other violations require intentional discrimination. Harris v. Capital Growth Investors XIV, 52 Cal. 3d 1142, 1172;Munson v. Del Taco, Inc., 46 Cal. 4th 661, 671 (2009). A plaintiff must show (1) that he or she was denied equal treatment or was otherwise discriminated against by the business establishment, (2) that a motivating reason for the discrimination was the perception of plaintiff’s protected status, (3) that the plaintiff was harmed, and (4) that the conduct of the business establishment was a substantial factor in causing that harm. Cal. Civ. Code §§ 51, 51.5, 52.
Similarly, the Gender Tax Repeal Act, enacted in 1995, specifically prohibits a business establishment from price discriminating on the basis of a person’s gender. Cal. Civ. Code § 51.6. Some gender-based price differences may be justified (tailors, barbers, dry cleaners), but the pricing in such cases must be clearly posted.
With respect to a “Ladies’ Night” event or car wash discounts given only to women, the elements are often quite clear. If a restaurant or bar owner, for example, holds a “Ladies’ Night” offering discounted beverages or food to its female patrons while charging male patrons the regular amount, it is discriminating against its male patrons on the basis of gender, causing the male patron to pay more because of this conduct. Koire v Metro Car Wash, 40 Cal 3d 24 (1985). The increase in business that such an event might garner will be greatly offset by the penalty: plaintiffs can claim treble damages with a minimum of $4,000 per violation, plus attorneys’ fees for violations of both the Unruh Act and the Gender Tax Repeal Act. Cal. Civ. Code § 52(a). While it is a common perception that a Ladies’ Night-type promotion is not discriminatory because it promotes a historically protected class, the statutory language is clear: no price or service differentials on the basis of a protected status – whether positively or negatively intended – are tolerated.
If holding such events tends to bring in business, then consider utilizing the concept without the discriminatory specials. Call it “Ladies’ Night,” carry out a theme that appeals to women, but when it comes to pricing, service, or swag, give the same deals to all patrons.
1 The text of the statute reads: “All persons within the jurisdiction of this state are free and equal, and no matter what their sex, race, color, religion, ancestry, national origin, disability, medical condition, genetic information, marital status, or sexual orientation are entitled to the full and equal accommodations, advantages, facilities, privileges, or services in all business establishments of every kind whatsoever.” Cal. Civ. Code § 51(b).
REFERENCE:

Like a bear: snowed-in driver survives two-months in car by 'hibernating'

In one of the most remarkable - and odd - survival stories of recent times, a Swedish driver claims to have endured two months snowbound in his car as temperatures plunged as low as -30C.


The astonishing story emerging from mid-winter Sweden has doctors and scientists at odds over how the man survived such an extended deep freeze eating nothing but snow.

Video Credits: From Euro News

With the survivor today "awake and able to communicate", according to the hospital treating him, doctors, rescuers and the world’s media are anxious to know how he ended up in such a frosty predicament.

He is believed to be Peter Skyllberg, 44, who was found by two snowmobile riders near the town of Umea, just outside the Arctic circle, on FridayThe rescuers dug through about a metre of snow to find Skyllberg on the back seat in a sleeping bag, emaciated and very weak, according to Ebbe Nyberg, a local police officer.
"They were amazed at what they found: a man in his mid-40s huddled inside in a sleeping bag, starving and barely able to move or speak," Nyberg, working in Vaesterbotten county, was quoted as saying.

Skyllberg told police he had been in the car since December 19 without food, surviving only by eating snow and staying inside his warm clothes and sleeping bag.

Dr Ulf Segerberg, the chief medical officer at Noorland's University Hospital, said he had never seen a case like it.
The man had probably been kept alive, he said, by the natural warming properties of his snowed-covered car, which would have acted as "the equivalent of an igloo".

"This man obviously had good clothes; he's had a sleeping bag and he's been in a car that's been snowed over," said Dr Segerberg.
There have been cases of people caught out in the mountains and if they can dig themselves down in the snow they are able to survive and be found. But there must be something special in this case 

"Igloos usually have a temperature of a couple of degrees below 0C and if you have good clothes you would survive in those temperatures and be able to preserve your body temperature.
"Obviously he has managed to preserve his body temperature or he wouldn't have made it because us humans can't really stand being cooled down like reptiles, for instance, which can change the body temperature."

Two months was at the "upper limit" of what a person would be able to survive without food, added Dr Segerberg.

But another doctor, Stefan Branth, said a low body temperature might have been just what saved Skyllberg, putting him into hibernation mode, "a bit like a bear".

"Humans can do that. He probably had a body temperature of around 31C which the body adjusted to. Due to the low temperature not much energy was used up," UK newspaper The Guardian reported Dr Branth saying.

That's a claim based on less-than-solid science.

Despite accounts of people surviving in extremely low temperatures - like icy lakes, or beneath avalanches - humans are not considered capable of hibernation, an extended period of "suspended animation", which requires a much slower heart rate, metabolism and breathing that allows animals to survive on reserves of body fat.


However, science blog Inhuman Experiment last year recounted reports dating to the 1850s of Indian yogis surviving many days buried in airtight conditions only to be "exhumed" in good health. It also reprints a century-old British Medical Journal report of Russian peasants sleeping half the year to survive famine.
Dr Segerberg said that, even in a part of the world where sub-zero temperatures and heavy snow are the norm, the Skyllberg case was unusual.
"There have been cases of people caught out in the mountains and if they can dig themselves down in the snow they are able to survive and be found. But there must be something special in this case," he said.
More Sources:

50 Things taught to students before entering in College

50 Things taught to students before entering in College

Dear Class of 2014,
This will be my last entry written specifically for you; beginning with the launch of our new site in early September, I'll begin focusing on the future class of 2011. I hope that you guys won't be strangers; stay in touch either in person (come visit us!) or online (please drop by the blogs from time to time and say hi).
As you begin your college experience, and I prepare for my 10-year college reunion, I thought I'd leave you with the things that, in retrospect, I think are important as you navigate the next four years. I hope that some of them are helpful.
Here goes...



  1. Your friends will change a lot over the next four years. Let them.
  2. Call someone you love back home a few times a week, even if just for a few minutes.
  3. In college more than ever before, songs will attach themselves to memories. Every month or two, make a mix cd, mp3 folder, whatever - just make sure you keep copies of these songs. Ten years out, they'll be as effective as a journal in taking you back to your favorite moments.
  4. Take naps in the middle of the afternoon with reckless abandon.
  5. Adjust your schedule around when you are most productive and creative. If you're nocturnal and do your best work late at night, embrace that. It may be the only time in your life when you can.
  6. If you write your best papers the night before they are due, don't let people tell you that you "should be more organized" or that you "should plan better." Different things work for different people. Personally, I worked best under pressure - so I always procrastinated... and always kicked ass (which annoyed my friends to no end). ;-) Use the freedom that comes with not having grades first semester to experiment and see what works best for you.
  7. At least a few times in your college career, do something fun and irresponsible when you should be studying. The night before my freshman year psych final, my roommate somehow scored front row seats to the Indigo Girls at a venue 2 hours away. I didn't do so well on the final, but I haven't thought about psych since 1993. I've thought about the experience of going to that show (with the guy who is now my son's godfather) at least once a month ever since.
  8. Become friends with your favorite professors. Recognize that they can learn from you too - in fact, that's part of the reason they chose to be professors.
  9. Carve out an hour every single day to be alone. (Sleeping doesn't count.)
  10. Go on dates. Don't feel like every date has to turn into a relationship.
  11. Don't date someone your roommate has been in a relationship with.
  12. When your friends' parents visit, include them. You'll get free food, etc., and you'll help them to feel like they're cool, hangin' with the hip college kids.
  13. In the first month of college, send a hand-written letter to someone who made college possible for you and describe your adventures thus far. It will mean a lot to him/her now, and it will mean a lot to you in ten years when he/she shows it to you.
  14. Embrace the differences between you and your classmates. Always be asking yourself, "what can I learn from this person?" More of your education will come from this than from any classroom.
  15. All-nighters are entirely overrated.
  16. For those of you who have come to college in a long-distance relationship with someone from high school: despite what many will tell you, it can work. The key is to not let your relationship interfere with your college experience. If you don't want to date anyone else, that's totally fine! What's not fine, however, is missing out on a lot of defining experiences because you're on the phone with your boyfriend/girlfriend for three hours every day.
  17. Working things out between friends is best done in person, not over email. (IM does not count as "in person.") Often someone's facial expressions will tell you more than his/her words.
  18. Take risks.
  19. Don't be afraid of (or excited by) the co-ed bathrooms. The thrill is over in about 2 seconds.
  20. Wednesday is the middle of the week; therefore on wednesday night the week is more than half over. You should celebrate accordingly. (It makes thursday and friday a lot more fun.)
  21. Welcome failure into your lives. It's how we grow. What matters is not that you failed, but that you recovered.
  22. Take some classes that have nothing to do with your major(s), purely for the fun of it.
  23. It's important to think about the future, but it's more important to be present in the now. You won't get the most out of college if you think of it as a stepping stone.
  24. When you're living on a college campus with 400 things going on every second of every day, watching TV is pretty much a waste of your time and a waste of your parents' money. If you're going to watch, watch with friends so at least you can call it a "valuable social experience."
  25. Don't be afraid to fall in love. When it happens, don't take it for granted. Celebrate it, but don't let it define your college experience.
  26. Much of the time you once had for pleasure reading is going to disappear. Keep a list of the books you would have read had you had the time, so that you can start reading them when you graduate.
  27. Things that seem like the end of the world really do become funny with a little time and distance. Knowing this, forget the embarassment and skip to the good part.
  28. Every once in awhile, there will come an especially powerful moment when you can actually feel that an experience has changed who you are. Embrace these, even if they are painful.
  29. No matter what your political or religious beliefs, be open-minded. You're going to be challenged over the next four years in ways you can't imagine, across all fronts. You can't learn if you're closed off.
  30. If you need to get a job, find something that you actually enjoy. Just because it's work doesn't mean it has to suck.
  31. Don't always lead. It's good to follow sometimes.
  32. Take a lot of pictures. One of my major regrets in life is that I didn't take more pictures in college. My excuse was the cost of film and processing. Digital cameras are cheap and you have plenty of hard drive space, so you have no excuse.
  33. Your health and safety are more important than anything.
  34. Ask for help. Often.
  35. Half of you will be in the bottom half of your class at any given moment. Way more than half of you will be in the bottom half of your class at some point in the next four years. Get used to it.
  36. In ten years very few of you will look as good as you do right now, so secretly revel in how hot you are before it's too late.
  37. In the long run, where you go to college doesn't matter as much as what you do with the opportunities you're given there. The MIT name on your resume won't mean much if that's the only thing on your resume. As a student here, you will have access to a variety of unique opportunities that no one else will ever have - don't waste them.
  38. On the flip side, don't try to do everything. Balance = well-being.
  39. Make perspective a priority. If you're too close to something to have good perspective, rely on your friends to help you.
  40. Eat badly sometimes. It's the last time in your life when you can do this without feeling guilty about it.
  41. Make a complete ass of yourself at least once, preferably more. It builds character.
  42. Wash your sheets more than once a year. Trust me on this one.
  43. If you are in a relationship and none of your friends want to hang out with you and your significant other, pay attention. They usually know better than you do.
  44. Don't be afraid of the weird pizza topping combinations that your new friend from across the country loves. Some of the truly awful ones actually taste pretty good. Expand your horizons.
  45. Explore the campus thoroughly. Don't get caught.
  46. Life is too short to stick with a course of study that you're no longer excited about. Switch, even if it complicates things.
  47. Tattoos are permanent. Be very certain.
  48. Don't make fun of prefrosh. That was you like 2 hours ago.
  49. Enjoy every second of the next four years. It is impossible to describe how quickly they pass.
  50. This is the only time in your lives when your only real responsibility is to learn. Try to remember how lucky you are every day.

Be yourself. Create. Inspire, and be inspired. Grow. Laugh. Learn. Love.
Welcome to some of the best years of your lives.

The world’s first acoustic invisibility cloak has been created by Duke University

Duke University's acoustic invisibility cloak
Duke University has built the first 3D omnidirectional acoustic invisibility cloak. The cloaking device, which takes the form of a pyramid of perforated plastic, is hidden from sound waves striking it from any direction — if you fired some sound waves at the device, using sonar for example, you would see nothing; not the cloak, and not the object beneath it. This has obvious applications in the military, but also in architectural acoustics.
Here at ExtremeTech we’ve written a lot about metamaterials — specially fabricated materials that have properties never found in nature — and how they allow for the creation of some seriously outlandish devices, such as invisibility cloaks and superlenses. Metamaterials aren’t necessarily restricted to bending light waves in odd ways, though; they can also be used to manipulate acoustic waves, too.
Case in point: Duke University’s 3D acoustic cloak, which consists of layers of perforated plastic arranged in a pyramidal shape. The exact geometry of the cloak, plus the placement of the holes, very precisely control the propagation and reflection of sound waves. The idea is that, when the cloak is hit by some acoustic waves, it alters the trajectory of the waves so that it’s as if the cloak and the cloaked object were never there.
If you imagine the Duke cloak sitting on the ground, and sound waves moving straight down towards it, they would be reflected by the cloak in such a way that it appears that they’ve bounced off the floor. As you can see in the diagram below, the cloaking is not quite perfect (compare Ground to Cloak), but it’s pretty good for an experimental prototype.
Diagram showing the acoustic properties of Duke University's acoustic cloak
The leader of the project, Duke University’s Steven Cummer, says, despite the cloak’s rudimentary appearance, “We put a lot of energy into calculating how sound waves would interact with it. We didn’t come up with this overnight.” He doesn’t go into details, but there was probably a lot of computer modeling, with different sized holes and geometric arrangements. [Research paper: doi:10.1038/nmat3901 - "Three-dimensional broadband omnidirectional acoustic ground cloak"]
Duke University's acoustic cloak, with researcher Bogdan Popa
Just your usual creepy shot of a researcher trying to look mesmerized by his latest creation.
Moving forward, Cummer says there are obvious military applications. ”We conducted our tests in the air, but sound waves behave similarly underwater, so one obvious potential use is sonar avoidance.” Imagine, if you will, underwater mines that cannot be detected due to acoustic cloaking. There could also be interesting civil applications, too — architectural acoustics are a very important factor when designing any kind of space, whether it’s an office or an auditorium. If a structural component — a beam, a window, a door — is getting in the way of the acoustics, you could just shield it.

Was Genghis Khan history's greenest conqueror?

The Mongol invasion scrubbed nearly 700 million tons of carbon from the atmosphere, according to surprising new research.

GENGHIS GREEN: The founder of history's largest contiguous empire cooled the planet while taking a body count. (Photo: Wiki Commons/public domain)
Genghis Khan's Mongol invasion in the 13th and 14th centuries was so vast that it may have been the first instance in history of a single culture causing man-made climate change, according to new research out of the Carnegie Institution's Department of Global Ecology, reports Mongabay.com.
 
Unlike modern day climate change, however, the Mongol invasion cooled the planet, effectively scrubbing around 700 million tons of carbon from the atmosphere.
 
So how did Genghis Khan, one of history's cruelest conquerors, earn such a glowing environmental report card? The reality may be a bit difficult for today's environmentalists to stomach, but Khan did it the same way he built his empire — with a high body count.
 
Over the course of the century and a half run of the Mongol Empire, about 22 percent of the world's total land area had been conquered and an estimated 40 million people were slaughtered by the horse-driven, bow-wielding hordes. Depopulation over such a large swathe of land meant that countless numbers of cultivated fields eventually returned to forests.
 
In other words, one effect of Genghis Khan's unrelenting invasion was widespread reforestation, and the re-growth of those forests meant that more carbon could be absorbed from the atmosphere.
 
"It's a common misconception that the human impact on climate began with the large-scale burning of coal and oil in the industrial era," said Julia Pongratz, who headed the Carnegie Institution research project. "Actually, humans started to influence the environment thousands of years ago by changing the vegetation cover of the Earth's landscapes when we cleared forests for agriculture."
 
Pongratz's study, which was completed with the help of her Carnegie colleague Ken Caldeira, as well as with German colleagues at the Max Planck Institute for Meteorology, measured the carbon impact of a number of historical events besides just the Mongol invasion, including the Black Death in Europe, the fall of China's Ming Dynasty and the conquest of the Americas.
 
What all of these events share in common is the widespread return of forests after a period of massive depopulation, but the longevity of the Mongol invasion made it stand out as having the biggest impact on the world's climate.
 
"We found that during the short events such as the Black Death and the Ming Dynasty collapse, the forest re-growth wasn't enough to overcome the emissions from decaying material in the soil," explained Pongratz. "But during the longer-lasting ones like the Mongol invasion ... there was enough time for the forests to re-grow and absorb significant amounts of carbon."
 
The 700 million tons of carbon absorbed as a result of the Mongol invasions roughly equals the amount of carbon global society now produces annually from gasoline.
 
Though Genghis Khan's legacy as one of the world's cruelest conquerors isn't likely to change because of the unintended "green" consequences of his invasions, Pongratz hopes that her research can lead to land-use changes that someday might alter how future historians rate our environmental impact.
 
"Based on the knowledge we have gained from the past, we are now in a position to make land-use decisions that will diminish our impact on climate and the carbon cycle. We cannot ignore the knowledge we have gained," she said.

Sources:

Church Of Scientology Investigated 'South Park' Creators Matt Stone, Trey Parker: Report

For Matt Stone and Trey Parker, nothing is holy or immune to satire. And since the launch of their groundbreaking animated TV series "South Park," they've skewered a multitude of world religions, pointing out hypocrisies, inanities or just playing with ridiculous stereotypes. One of their most famous religious satires, 2005's Scientology-targeting "Trapped In The Closet" episode, allegedly struck such a nerve with the church's leaders that the group responded by targeting Stone, Parker and their friends in a long-term covert investigation.

Marty Rathbun, a former Church of Scientology executive-turned-critic and independent worshipper, revealed to the Village Voice a number of documents that detailed the religious sect's detailed surveillance of the Emmy-winning TV moguls. Through the help of informants, public records and various other means, they searched for "vulnerabilities" in the pair's personal lives, and after exploring their personal and business connections, widened their focus to investigating actors such as John Stamos, as well.
"Phone records. Bank records. Personal letters that expose some kind of vulnerability," Rathbun told the Voice. "They'll read stuff into the kind of alcohol you're drinking and how much. Prescriptions. They'll figure out your diet. They can find out a lot about you through your trash."
Rathbun's personal site leads with a post that includes more information, including this summary: "In ’06 the creators of South Park, Trey Parker and Matt Stone, became targets of Corporate Scientology’s OSA. Operations were run in an attempt to silence Parker and Stone. While Corporate Scientology was ultimately unsuccessful, left behind an instructive data trail during their efforts."

"Trapped in the Closet" featured a storyline that had Stan, one of the four children that make up the show's core, take a "personality test" after being encountered on the street by a group of Scientologists. The vague test reveals that he is miserable, which leads him to agree to pay the church to make him happy again. An "E-meter" reading reveals that he is housing the soul of Scientology founder L. Ron Hubbard, and various Hollywood celebrities who are members of the church flock to his home to help convince him to become their new leader.
One of those celebrities included Tom Cruise, who locks himself in a closet, which was a clear allusion to various rumors about his sexuality. John Travolta, another member of the church, soon joined him in the closet. Stan's friends tell him that the religion is actually a cult, pointing out that Hubbard was a science fiction writer, though he at first refuses to believe it. Eventually, the Scientology elders reveal that the church is a for-profit con, calling their own religion "crap."
Cruise was so incensed by the episode that he allegedly threatened to not participatein promotion for "Mission: Impossible III" junket if a re-run of the episode was aired; Viacom owns both Comedy Central and Paramount, the studio that put out the film. Cruise's reps denied this, though the episode was indeed pulled. Stone and Parker, for their part, put out a satirical statement on the matter:
"So, Scientology, you may have won THIS battle, but the million-year war for earth has just begun! Temporarily anozinizing our episode will NOT stop us from keeping Thetans forever trapped in your pitiful man-bodies. Curses and drat! You have obstructed us for now, but your feeble bid to save humanity will fail! Hail Xenu!!!"
"Trey Parker and Matt Stone, servants of the dark lord Xenu."
Rathbun teased more documents, which reveal major advances in their investigations, would come soon. He was arrested in September, allegedly at the behest of the Church of Scientology, though charges were later dropped; the Voice reported then that the Church of Scientology was harassing him, in part because he practices the faith outside of the official Church.
"South Park" satirizes religion in just about every episode (click here for a slide show of ten of their most memorable). The show has cast Satan as the cowardly lover of Saddam Hussein, while Kyle, another of the four core children, comes from a very stereotypical Jewish family. Parker and Stone also created the Broadway show, "Book of Mormon," which pokes fun at that religion.

References:
Church of Scientology Spied On Southpark Creators Trey Parker and Matt Stone, Found Nothing

Tardigrades: The only animal that survives in Vacuum of Space


Tardigrades are tiny water dwelling animals.

They're also complete badasses.

They are to date the only animals known to be able to survive in the vacuum of space. They can also survive doses of ionizing radiation that would kill a human, go without food or water for ten years and survive temperatures almost down to absolute zero. They can also completely dry out, to the point where they're just 3% water, and then rehydrate and happily carry on their life cycle.

Image by Andreas Schmidt-Rhaesa, Corinna Schulze and Ricardo Neves for the Nikon Small World competition.

OCEA Project Finalists – I-15 Corridor Expansion

his is the first of a series about the five finalists for ASCE’s Outstanding Civil Engineering Achievement (OCEA) awards. Established in 1960, the OCEA Award recognizes a project that makes a significant contribution to both the civil engineering profession and society as a whole. The winner of this year’s OCEA award will be announced at ASCE’s Outstanding Projects And Leaders (OPAL) Gala, March 20, at the Renaissance Arlington Capital View Hotel in Arlington, Virginia. Today, read about the I-15 Corridor Expansion project.
I-15 Corridor Expansion Project
I-15 Corridor Expansion Project
Like many interstates in the U.S., Interstate 15 in Utah County, Utah, had reached the end of its design life. The infrastructure was deteriorating and needed to be updated; congestion and population growth in the area demanded the freeway be widened.
The Utah Department of Transportation’s (UDOT) $1.725 billion I-15 Corridor Expansion (I-15 CORE) project used innovative procurement, scheduling, and planning techniques to complete the highway expansion project 2 years ahead of schedule while saving taxpayers $260 million. The expanded roadway relieves congestion for motorists who travel to and from Salt Lake City and Provo. By using accelerated bridge construction, wireless paving and grading, and diverging diamond interchanges, the impact to traffic was reduced for the over 130,000 motorists traveling through the I-15 CORE every day.
ASCE News Associate Editor Doug Scott interviewed Brian G. Tolbert, P.E., project manager/infrastructure with the Fluor Corporation, who served as deputy project director of the I-15 CORE project.
1. What is the most innovative or creative aspect of your project?
Accelerated Bridge Construction (ABC) is not entirely new to UDOT projects, on a singular basis. However, PRC [Provo River Contractors, a joint venture of Fluor, Ames Construction, Ralph L. Wadsworth Construction, and Wadsworth Brothers Construction] moved 5 bridges into place using ABC methods over the course of the I-15 CORE project. In particular, our team set a Western Hemisphere record for moving the Sam White Bridge via self-propelled modular transport (SPMT), the longest completed bridge structure and the longest continuous 2-span bridge structure. This bridge is 354 feet long and 80 feet wide, and was coined the “Super Bowl” of bridge moves due to its football-field size and the fact [that] it was moved around the time of the NFL Super Bowl. The Sam White Bridge was only the second multispan bridge structure moved in the Western Hemisphere. The first multispan moved by SPMT was the 200 South bridge, which was moved into place by PRC the prior weekend. The use of large-scale wireless paving was another innovative aspect of this project. The use of cloud computing allowed up-to-date design information to be available nearly real-time for this GPS-guided system.
2. What was the biggest challenge?
Constructing the largest transportation project in Utah history, faster than any other megaproject, while  maintaining all existing lanes of traffic, was the biggest challenge. Essentially, the entire 24-mile stretch was under construction at the same time. Coordinating all of the construction activities, including traffic lane shifts and effective public outreach, was a significant challenge, too. Maintaining the safety of our workers exposed to high levels of traffic adjacent to work zones was also a major issue during construction.
 3. Did your project have any technical issues that you had to overcome? If so, what were they and how did you overcome them?
The entire project area is ancient lake bed. This results in soils that aren’t ideal for construction, particularly when accelerating the project to a record pace. Perhaps the most time-consuming technical issue to resolve relates to the poor subsurface conditions near Utah Lake that affectan approximate 3-mile stretch of the interstate. The proposed design contemplated raising this section of roadway along the lake by approximately 5 feet to exceed the 100-year flood plain elevation. However, this amount of embankment was predicted to induce long-term settlements that would have lasted for years and resulted in significant settlement amounts – up to 2 feet. PRC and UDOT overcame this issue by redesigning the interstate vertical profile to reduce the embankment-inducing settlement, while also designing and constructing earthen berms along the lake border to provide a dam effect and keep the interstate from being submerged in flood events. Also, highway detention areas in the highway alignment were constructed that would function in the event [that] the 100-year flood occurred.
  4. What time and budget challenges did your project have and what did you do to overcome them?
The extremely short construction schedule was the biggest challenge on the project. We had less than 3 years to design and build a $1.1 billion interstate freeway. We brought in 3 of the industry leaders to complete the design using over 300 design engineers in only 14 months. These firms were HDR, Michael Baker, and Jacobs. During the construction phase our team worked double shifts six days [a] week. We also came up with innovative techniques for cold-weather concrete paving and MOT [Maintenance of Traffic] shifts to help facilitate the schedule.
5. Sustainability is one the three initiatives here at ASCE. Describe how your project adheres to being sustainable.
Our project recycled a large majority of the pavement and base materials that were demolished by the project. Instead of going to landfills or other disposal sites, this material was crushed into useable size and composition for embankment and pavement base materials. Slag, a by-product of steel processing, was used extensively throughout the project, which reduced the need for excavation of other sources. A secondary sustainability benefit was the reduction in traffic congestion and delay [through] utilizing innovative MOT strategies that maintained the existing number of lanes open to traffic throughout 90% of the construction schedule. UDOT estimates this reduction in congestion provided over $800 million in user-cost savings.