Today on New Scientist: 29 January 2013

Creatures of the air caught in the mist

Photographer Todd Forsgren uses mist nets to briefly ensnare a variety of tropical South American birds before releasing them, unharmed

Drug reduces enlarged prostate with few side effects

Shrinking enlarged prostates by blocking a potent growth factor could avoid problems - such as erectile dysfunction - that accompany current treatments

Climate change blamed for Australia's extreme weather

Floods have hit the east coast of Australia before recent bush fires have been put out, giving people a taste of climate change's possible consequences

Midnight sun: How to get 24-hour solar power

Rust may be the scourge of electronics but it could help solar power run all night

The most beautiful explanations

The 2012 Edge questions asked for great thinkers' favourite explanations. This Explains Everything collects them all into a fascinating read

Netted Costa Rican birds pay small price for art

Only mildly traumatic, mist nets offer an easy and safe way to catch birds for artistic, and ecological, study

Iran launches monkey into space

The Iranian Space Agency claims to have launched a rhesus monkey into space on a sub-orbital flight, and returned it safely to Earth

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Million mourners set to honour Cambodia's ex-king

PHNOM PENH: More than one million mourners are expected to line the streets of the Cambodian capital on Friday for a lavish funeral procession for their revered former King Norodom Sihanouk, officials say.

The late monarch's body will be transported atop a golden float shaped like a mythological bird from the royal palace -- where he has been lying in state for three months -- to a funeral pyre in a city park.

"This is our last homage to say goodbye to the great hero king," Prime Minister Hun Sen said on national radio this week.

Sihanouk died of a heart attack aged 89 in Beijing on October 15 last year.

He abdicated in 2004 after steering Cambodia through six decades marked by independence from France, civil war, the murderous Khmer Rouge regime and finally peace.

His body will be kept at the cremation site for religious ceremonies until Monday when his wife and son King Norodom Sihamoni are expected to light the pyre.

Foreign dignitaries -- including French Prime Minister Jean-Marc Ayrault, Japan's Prince Akishino and a host of Asian leaders or high-ranking officials -- are due to attend the cremation.

Flags will fly at half-mast. Radio and TV stations as well as entertainment venues have been instructed to refrain from showing "joyful spectacles", performances and concerts.

Cambodians have been urged to wear black ribbons pinned to their shirts.

"This is the first time in Cambodian history that the country holds such a large funeral for a king," said Sihanouk's long-time personal assistant Prince Sisowath Thomico.

"The nation does this to show him the same respect he gave to the country," he told AFP.

After the cremation, Sihanouk's remains will be put in a golden-colour urn that will be placed in a stupa inside the royal palace, he said, in line with the late monarch's wishes.

Large portraits of Sihanouk have been erected along Phnom Penh's streets and outside the royal palace where people have regularly gathered for religious ceremonies since his death.

"When the King-Father is cremated, it will be a big loss for Cambodia. We will lose our spirit," said Khut Simon, who joined about 100 people for one such ceremony.

"He was a good king who was incomparable," said the 61-year-old, clutching three pictures of the late monarch to her chest.

Sihanouk was just 18 when placed on the throne in 1941 by French colonial authorities, but quickly defied his patron's expectations of a pliant king.

Many elderly Cambodians fondly recall the 1950s and 1960s as a golden era, when Sihanouk led the country to independence from France and a rare period of political stability.

Hundreds of thousands filled the capital's boulevards when his body returned home from China in October.

A self-confessed "naughty boy" who married six times and fathered 14 children, the former king was also a prolific amateur filmmaker and shrewd political survivor who repeatedly backed different regimes.

He was not immune to controversy, notably aligning himself with the communist Khmer Rouge after being ousted by US-backed general Lon Nol in 1970.

After seizing power, the Khmer Rouge put Sihanouk under house arrest in the royal palace. Their 1975-79 reign of terror killed up to two million people, including five of Sihanouk's own children.

Before the Vietnamese invaded and toppled the Khmer Rouge, Sihanouk took exile in China.

He continued to push for peace, which eventually came in the 1990s. Sihanouk triumphantly regained the throne in 1993 but his influence diminished as strongman premier Hun Sen extended his grip on power.

In recent years, Sihanouk -- who battled illnesses including cancer, diabetes and heart problems -- spent long periods of time in China undergoing medical treatment, with his devoted sixth wife Monique always at his side.

-AFP/fl

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Obama backs immigration reform for skilled tech workers

Obama announced today that he backs immigration reform.

(Credit:
White House)

Tech companies may score a victory in their hopes to get immigration reform passed for skilled tech workers.

President Obama urged Congress today to work on immigration policy that would allow foreign-born startup founders to stay in the country. At the same time, several U.S. senators introduced a bill focusing on the same. As U.S. immigration policy currently stands, U.S.-educated computer programmers and engineers could be deported once finishing school.

"Right now in one of those classrooms there's a student wrestling with how to turn their big idea -- their Intel or Instagram -- into a big business," Obama said during a speech in Las Vegas today. "We're giving them all the skills they need to figure that out, but then we're going to turn around and tell them to start that business and create those jobs in China or India or Mexico or someplace else. That's not how you grow new industries in America. That's how you give new industries to our competitors. That's why we need comprehensive immigration reform."

The president mentioned that Instagram was co-founded by an immigrant -- Brazilian Michel Krieger who studied at Stanford University. But, he said, not all startup founders are able to secure visas and stay in the U.S.

In addition to Obama urging Congress to act today, a handful of U.S. Senators -- Orrin Hatch, R-Utah, Amy Klobuchar, D-Minn., Marco Rubio, R-Fla., Chris Coons, D-Del. -- introduced new legislation called the Immigration Innovation Act of 2013. This bill focuses on reforming the country's immigration laws for high-skilled workers. The idea is to increase the H-1B visa cap from 65,000 to 115,000, along with easing green cards rules.

Several tech companies have come out in support of such reform. Google, Intel, and Hewlett Packard all commended the government's efforts on changing the country's immigration policy today.

Google's senior vice president of People Operations, Laszlo Bock, wrote in a blog post today that immigrants founded 40 percent of tech sector companies that went public in the U.S., including Yahoo, eBay, Intel, and Google. And, one in four startups were founded by an immigrant. Combined, these companies employ about 560,000 workers and make $63 billion in sales.

"Our experiences here at Google and in the tech sector show us that immigrants to the U.S. are a powerful force for entrepreneurship and innovation at every level, from startups to multinational corporations," Bock wrote.

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Timbuktu’s vulnerable manuscripts are city’s "gold"

French and Malian troops surrounded Timbuktu on Monday and began combing the labyrinthine city for Islamist fighters. Witnesses, however, said the Islamists, who claim an affiliation to al Qaeda and had imposed a Taliban-style rule in the northern Malian city over the last ten months, slipped into the desert a few days earlier.

But before fleeing, the militants reportedly set fire to several buildings and many rare manuscripts. There are conflicting reports as to how many manuscripts were actually destroyed. (Video: Roots of the Mali Crisis.)

On Monday, Sky News posted an interview with a man identifying himself as an employee of the Ahmed Baba Institute, a government-run repository for rare books and manuscripts, the oldest of which date back to the city's founding in the 12th century. The man said some 3,000 of the institute's 20,000 manuscripts had been destroyed or looted by the Islamists.

Video showed what appeared to be a large pile of charred manuscripts and the special boxes made to preserve them in front of one of the institute's buildings.

However, a member of the University of Cape Town Timbuktu Manuscript Project told eNews Channel Africa on Tuesday that he had spoken with the director of the Ahmed Baba Institute, Mahmoud Zouber, who said that nearly all of its manuscripts had been removed from the buildings and taken to secure locations months earlier. (Read "The Telltale Scribes of Timbuktu" in National Geographic magazine.)

A Written Legacy

The written word is deeply rooted in Timbuktu's rich history. The city emerged as a wealthy center of trade, Islam, and learning during the 13th century, attracting a number of Sufi religious scholars. They in turn took on students, forming schools affiliated with's Timbuktu's three main mosques.

The scholars imported parchment and vellum manuscripts via the caravan system that connected northern Africa with the Mediterranean and Arabia. Wealthy families had the documents copied and illuminated by local scribes, building extensive libraries containing works of religion, art, mathematics, medicine, astronomy, history, geography, and culture.

"The manuscripts are the city's real gold," said Mohammed Aghali, a tour guide from Timbuktu. "The manuscripts, our mosques, and our history—these are our treasures. Without them, what is Timbuktu?"

This isn't the first time that an occupying army has threatened Timbuktu's cultural heritage. The Moroccan army invaded the city in 1591 to take control of the gold trade. In the process of securing the city, they killed or deported most of Timbuktu's scholars, including the city's most famous teacher, Ahmed Baba al Massufi, who was held in exile in Marrakesh for many years and forced to teach in a pasha's court. He finally returned to Timbuktu in 1611, and it is for him that the Ahmed Baba Institute was named.

Hiding the Texts

In addition to the Ahmed Baba Institute, Timbuktu is home to more than 60 private libraries, some with collections containing several thousand manuscripts and others with only a precious handful. (Read about the fall of Timbuktu.)

Sidi Ahmed, a reporter based in Timbuktu who recently fled to the Malian capital Bamako, said Monday that nearly all the libraries, including the world-renowned Mamma Haidara and the Fondo Kati libraries, had secreted their collections before the Islamist forces had taken the city.

"The people here have long memories," he said. "They are used to hiding their manuscripts. They go into the desert and bury them until it is safe."

Though it appears most of the manuscripts are safe, the Islamists' occupation took a heavy toll on Timbuktu.

Women were flogged for not covering their hair or wearing bright colors. Girls were forbidden from attending school, and boys were recruited into the fighters' ranks.

Music was banned. Local imams who dared speak out against the occupiers were barred from speaking in their mosques. In a move reminiscent of the Taliban's destruction of Afghanistan's famous Bamiyan Buddha sculptures, Islamist fighters bulldozed 14 ancient mud-brick mausoleums and cemeteries that held the remains of revered Sufi saints.

A spokesman for the Islamists said it was "un-Islamic" for locals to "worship idols."

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Clinton Talks 2016, Stands by Benghazi Testimony

In her final television interview as Secretary of State, Hillary Clinton told ABC's Cynthia McFadden that she is "flattered and honored" at the intense interest in whether she might run for president in 2016.

But Clinton maintained that right now she's "not focused" on a presidential campaign; instead she said she wants to return to a "normal" life when she steps down from office on Friday.

Watch Cynthia McFadden's full interview with Secretary of State Hillary Clinton on "Nightline" tonight at 12:35 a.m. ET

Clinton's first order of business, she said, will be sleep.

"I hope I get to sleep in," she told McFadden with a laugh. "It will be the first time in many years. I have no office to go to, no schedule to keep, no work to do. That will probably last a few days then I will be up and going with my new projects," she said.

"I have been working or attending school full-time since I was 13. This is going to be new for me. I don't know how I'm going to react to it, to be honest."

PHOTOS: Hillary Clinton Through the Years: From Wellesley to the White House, and Beyond

Clinton has had no trouble articulating her reaction to what has arguably been the darkest chapter of her tenure as Secretary of State: the Sept. 11 attack on the U.S. consulate in Benghazi, Libya, in which four Americans, including Ambassador Chris Stevens, were killed.

Final Farewell: Hillary Clinton Steps Down as Secretary of State Watch Video

Secretary Clinton had a heated exchange with Republican Senator Ron Johnson during her five hours of testimony before Congress about the attack last week. Johnson accused the administration of misleading the American people about the cause of the attack, when UN Ambassador Susan Rice, on Sunday political talk shows, blamed it on protesters.

Clinton snapped back at Johnson, "Four Americans are dead. What difference does it make?" For that, she has been sharply criticized by some conservatives.

Clinton said she "absolutely" stands by her response to Johnson, maintaining that the administration has been transparent with the information it knew, when it was available. Clinton said partisan politics have no place in a response to a terrorist attack against Americans.

"I believe that we should in public life, whether you're in the administration or the Congress, de-politicize crisis and work together to figure out what happened, what we can do to prevent it and then put into place both the institutional changes and the budgetary changes that are necessary, " she said.

"When someone tries to put into a partisan lens, when they focus not on the fact that we have such a terrible event happening with four dead Americans but instead what did somebody say on a Sunday morning talk show? That to me is not in keeping with the seriousness of the issue and the obligation we all have as public servants"

FULL TRANSCRIPT: Sec. of State Hillary Clinton's "Nightline" Interview

Asked about her health, Clinton said her recent illness, concussion and blood clot were all a surprise.

"When I got sick and fainted and hit my head I was so surprised, and I thought I would just get up and go to work. And thankfully I had very good medical care and doctors who said, 'No we'd better do an MRI, we'd better do this, we'd better do that,'" she said, calling herself "lucky."

"I know now how split second beset by a virus and dehydrated, what it can do to you."

Though she confirmed she is wearing special glasses to help with double vision, a lingering issue following her illness, Clinton said that she expects to be fully recovered and operating at "full speed" soon.

The Secretary told McFadden that if she does decide to run, she would have "no problem" making her health records public.

"Of course, that goes with the territory," she said.

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Iran launches monkey into space

Lisa Grossman, physical sciences reporter

Last summer, the Iranian Space Agency announced their plan to send a monkey into space - and now they've apparently done it.

According to Iranian state-run television, a press release on the space agency's website, and photos of the event, Iran sent a live rhesus monkey into sub-orbital space aboard a small rocket called Pishgam, or Pioneer. There's even a video posted on YouTube that appears to be of the launch (though New Scientist could not confirm its authenticity).

The report has not been confirmed independently, however, and the US air force's North American Aerospace Defense Command (NORAD) has not reported seeing any missile launches from Iran.

But independent observers say the launch looks legitimate.

"Really, I see no reason not to take their word for it," says Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics who also keeps a log of space launches. He says he's convinced by the photos and discussions he's had with several knowledgeable source in online forums.

In photos released on the Iranian Space Agency's website, the rocket looks like the same kind the agency has launched before, but with a larger nose cone designed to fit a small chamber that can support life. Images also showed a live rhesus monkey strapped to a small seat.

The reports say the rocket went straight up 120 kilometres, which McDowell says qualifies as outer space, but not high enough to reach orbit, and came back down with a parachute.

It's unclear exactly when the launch took place. The press release says that the launch happened on the birthday of Mohammed the Prophet, which is celebrated by Shiites on 29 January, but was celebrated last week elsewhere in the world.

Some countries worry that Iranian rockets capable of carrying animals or people could also carry weapons. Iran has denied any military intention.

"This is not a scary thing because this is not a big new rocket that could hit America or anything like that," McDowell says. "There's nothing military to this. It's purely for propaganda. Nevertheless, it advances their science and their technology by being able to do it."

Iran says the launch is a first step towards sending humans into space, which they intend to do in the next 5 to 8 years. To do that, McDowell says, they'll need to build a larger rocket. The country currently has a vehicle called Safir that has successfully put satellites in orbit, and is developing a more powerful launcher called Simorgh.

The next step will probably be to either launch Safir to carry a human to sub-orbital space, or an unmanned Simorgh flight into orbit to make sure mission controllers can return it to the ground safely.

"They don't want to repeat what the Soviets did" in 1957, McDowell says, "which is put a living being in orbit before you figure out how to get it back."

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"Off the scale" smog envelops Beijing again

BEIJING: Pollution levels in Beijing rose above index limits on Tuesday, the US embassy said, as a dense cloud of haze shrouded large swathes of northern China.

Mask-wearing residents of the capital battled through a second consecutive day of pollution at hazardous levels, despite Beijing municipal authorities warning those with respiratory difficulties to stay indoors.

It is at least the fourth time a dense cloud of haze has descended on northern China this winter, reducing visibility and causing flight delays, with even state media repeatedly expressing anger over the issue.

"The current environmental problems are worrisome," Wang Anshun, who took over as mayor of the Chinese capital this week, was quoted as saying by the official Xinhua news agency.

The US embassy's air quality index (AQI) reading for Beijing stood at 495 and "hazardous" at 11am, after having reached 517, or "beyond index", at 6am.

The index rates anything over 150 as "unhealthy", over 300 as "hazardous", while a reading above the upper limit of 500 is regarded as "beyond index".

Meanwhile, the Beijing Municipal Environmental Monitoring Centre gave the figure at 10am as 393, indicating the air in the capital was "severely polluted".

The toxic air follows an extreme bout of pollution earlier this month, peaking on January 13 when state media said readings for PM 2.5, particles small enough to deeply penetrate the lungs, reached 993 micrograms per cubic metre, almost 40 times the World Health Organisation's recommended safe limit.

The pollution sparked online uproar from residents and outrage from state media who urged officials to confront Beijing's poor air quality.

At the height of the smog, many residents rushed to buy facemasks and air purifiers, and doctors at two of Beijing's major hospitals said the number of patients with respiratory problems had increased sharply during the period.

China's pollution problems are blamed on the country's rapid urbanisation and dramatic economic development.

A total of 61 flights were delayed at Beijing Airport just before 9.30am on Monday, according to its website.

-AFP/fl

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'Citizen cartographers' help Google update maps of N. Korea

City center or Pyongyang, North Korea.

(Credit:
Google)

Maps of North Korea's landscape have for decades been largely blank, but thanks to "a community of citizen cartographers," Google Maps has managed to fill in some of the blanks.

Tapping input submitted to its Google Map Maker tool, the Web giant has added more detailed, up-to-date information to its maps of the reclusive nation, including streets, names, and other points of interest.

Jayanth Mysore, Google's senior product manager of Map Maker, discussed in a company blog post the effort behind assembling the new data:

To build this map, a community of citizen cartographers came together in Google Map Maker to make their contributions such as adding road names and points of interest. This effort has been active in Map Maker for a few years and today the new map of North Korea is ready and now available on Google Maps. As a result, the world can access maps of North Korea that offer much more information and detail than before.

One area where the changes are most apparent is in the city of Pyongyang, where highways, parks, and even subway stations have been added. Google provided the following examples:

Pyongyang, North Korea, before the map update.

(Credit:
Google)

Pyongyang, North Korea, after Google's map update.

(Credit:
Google)

The additions come mere weeks after Google Executive Chairman Eric Schmidt made a controversial humanitarian visit to the country where he warned officials that global Internet access was key to developing its economy.

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Space Pictures This Week: Martian Gas, Cloud Trails

Image courtesy SDO/NASA

The sun is more than meets the eye, and researchers should know. They've equipped telescopes on Earth and in space with instruments that view the sun in at least ten different wavelengths of light, some of which are represented in this collage compiled by NASA and released January 22. (See more pictures of the sun.)

By viewing the different wavelengths of light given off by the sun, researchers can monitor its surface and atmosphere, picking up on activity that can create space weather.

If directed towards Earth, that weather can disrupt satellite communications and electronics—and result in spectacular auroras. (Read an article on solar storms in National Geographic magazine.)

The surface of the sun contains material at about 10,000°F (5,700°C), which gives off yellow-green light. Atoms at 11 million°F (6.3 million°C) gives off ultraviolet light, which scientists use to observe solar flares in the sun's corona. There are even instruments that image wavelengths of light highlighting the sun's magnetic field lines.

—Jane J. Lee

Published January 28, 2013

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US Mom Missing in Turkey Took Side Trips

Sarai Sierra, the New York mother who disappeared in Turkey while on a solo trip, took several side excursions out of the country, but stayed in contact with her family the entire time, a family friend told ABC News.

Turkish media reported today that police were trying to establish why Sierra visited Amsterdam and Munich. Police were also trying to establish the identity of a man Sierra, 33, was chatting with on the Internet, according to local media.

Rachel Norman, a family friend, said the man was a group tour guide from the Netherlands and said Sierra stayed in regular touch with her family in New York.

Steven Sierra, Sarai's husband, and David Jimenez, her brother, arrived in Istanbul today to aid in the search.

The men have been in contact with officials from the U.S. consulate in the country and plan to meet with them as soon as they open on Tuesday, Norman said.

After that, she said Sierra and Jimenez would meet with Turkish officials to discuss plans and search efforts.

Family of Sarai Sierra|AP Photo

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Sarai Sierra was supposed to fly back to the United States on Jan. 22, but she never showed up for her flight home.

Her two boys, ages 11 and 9, have not been told their mother is missing.

Sierra, an avid photographer, left New York on Jan. 7. It was her first overseas trip, and she decided to go ahead after a friend had to cancel, her family said.

"It was her first time outside of the United States, and every day while she was there she pretty much kept in contact with us, letting us know what she was up to, where she was going, whether it be through texting or whether it be through video chat, she was touching base with us," Steven Sierra told ABC News before he departed for Istanbul.

But when it came time to pick her up from Newark Liberty International Airport in New Jersey, Sierra wasn't on board her scheduled flight.

Steven Sierra called United Airlines and was told his wife had never boarded the flight home.

Further investigation revealed she had left her passport, clothes, phone chargers and medical cards in her room at a hostel in Beyoglu, Turkey, he said.

The family is suspicious and said it is completely out of character for the happily married mother, who met her husband in church youth group, to disappear.

The U.S. Embassy in Turkey and the Turkish National Police are involved in the investigation, WABC-TV reported.

"They've been keeping us posted, from my understanding they've been looking into hospitals and sending out word to police stations over there," Steven Sierra said. "Maybe she's, you know, locked up, so they are doing what they can."

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