China successfully launched its second lunar probe on Friday, taking another step towards its goal of becoming a full-fledged space power. The probe, named Chang’e-2, made several maneuvers over the weekend to correct its trajectory, and is expected to reach the moon’s orbit this week.
The first Chang’e probe (they’re named after a Chinese moon goddess) orbited the moon for 16 months before self-destructing in a controlled impact with the lunar surface. This second craft is expected to return better data, because it will orbit closer to the surface than its predecessor and carries a higher resolution camera.
Chang’e-2 will orbit 100 kilometers above the moon’s surface and drop down to 15 kilometers on a mission to take detailed pictures of a candidate landing area for a follow-on craft, Chang’e-3, that is expected to be launched toward the end of 2014 or early 2015. [Science Insider]
The area of interest is known as the Bay of Rainbows, and the head of China’s lunar exploration program, Wu Weiren, says it’s the top choice for a landing spot.
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Worrying about water (and fighting over it, and creatively diverting it) is a way of life in the arid American West. However, according to reports out this week, the ever-precarious water level is nearing a breaking point where the states of the West might have to put emergency plans into place.
Lake Mead, the giant reservoir formed by the Hoover Dam near Las Vegas Nevada, is fast approaching its all-time low level of 1,083 feet set more than half a century ago. Should the level dip below 1,075, things will get serious.
That will set in motion a temporary distribution plan approved in 2007 by the seven states with claims to the river and by the federal Bureau of Reclamation, and water deliveries to Arizona and Nevada would be reduced. This could mean more dry lawns, shorter showers and fallow fields in those states, although conservation efforts might help them adjust to the cutbacks. California, which has first call on the Colorado River flows in the lower basin, would not be affected. [The New York Times]
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For two years, the Chinese science satellite SJ-06F flew solo orbits around the Earth (or, as solo as a machine could be in the expanding haze of space junk in orbit). But now it has a partner: Last month China executed the delicate maneuver of aligning another satellite launched this year, SJ-12, with its older counterpart.
Only the United States had executed such a satellite rendezvous before this, and it shows off China’s advancement in satellite sophistication. Three years ago the country blew one of its satellites to smithereens in a practice test—a test that created thousands of additional chunks of debris in orbit. The satellite meet-up is a more elegant trick, and one whose implications could be sinister or benign. Let’s explore both possibilities.
Don’t Worry
China’s game of catch-up, which has its space program closing in on America’s abilities in orbit, strikes fear into the hearts of some politicos. But malfeasance need not be the aim of the satellite maneuver.
“This set of skills serves a whole lot of purposes,” says Dean Cheng, a Chinese policy expert with the Heritage Foundation, a think tank in Washington DC. The most immediate application, Cheng says, may be testing sensors and control systems to help pave the way for docking procedures to be used with China’s first space station module, Tiangong-1, which is set to launch in 2011. “This sort of thing may very well be consistent with wanting to test drive the hardware and software before you test it on your space laboratory,” Cheng says. [New Scientist]
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Two Chinese bodies of water made pollution headlines this week: the Yellow Sea is home to an oil spill, and the Ting River to waste water from a copper processing plant.
The Ting River
The waste water came from the Zijinshan mine in China’s Fujian province. Though earlier this month mine operators blamed weather for waste water entering the river, this week they admitted to and contaminating the river with–as The Sydney Morning Herald puts it–”four Olympic-size swimming pools” worth of waste water containing acidic copper.
Zijin’s board of directors expresses “its deep regret regarding the incident and the improper handling of information disclosure by the company, for causing substantial losses to the fish farmers located at the reservoir downstream of the mine and having a harmful impact on society,” the company said yesterday. [Bloomberg Businessweek]
Chinese police have detained two of the mine’s operators. Meanwhile, acidic copper has reportedly killed 4 million pounds of fish and threatens drinking water.
Reports from China’s official Xinhua News Agency suggest that Zijin is being required only to fix the problem and compensate locals with an offer of three yuan for every kilogram of dead fish. That makes the potential payout about 6 million yuan, [about $900,000]. [Sidney Morning Herald]
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It appears Google and China have reached a détente.
The world’s largest search engine and the world’s most populous country traded barbs and threats this spring when Google said it might leave the country over the Chinese government’s Internet censorship. That fight cooled to a simmer over the last few months. Today, Google announced on its official blog that China has renewed its content provider license, further defusing the tension between the two.
Google has been waiting to hear back from Chinese authorities about its ICP license since the company filed for its renewal last week. The company’s license must be reviewed annually. Its renewal will allow the search giant to continue operating its China-based site, Google.cn. If Google had been unable to renew its license, it could have meant the end of the company’s operations in China [PC World].
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Last month, Costa Rica’s health ministry halted treatments at the country’s largest stem cell clinic, arguing that the treatments are unproven and possibly unsafe.
Though the Obama administration has expanded federal funding of stem cell research and there are ongoing clinical trials, there are currently no FDA-approved stem cell treatments. So some Americans, suffering from conditions ranging from cancer to spinal injuries, have looked elsewhere for experimental stem cell-based remedies, and clinics in countries such as Costa Rica, China, India, and Mexico have grown into stem cell tourist destinations.
Costa Rica’s largest clinic, the Institute of Cellular Medicine in San Jose, was operated by American entrepreneur Neil Riordan; it attracted about 400 patients for these treatments. The clinic used adult stem cells, which Costa Rica’s government had allowed the clinic to take from patients’ fat and bone marrow. The government had not authorized the clinic to use these cells for treatment.
“If (stem cell treatment’s) efficiency and safety has not been proven, we don’t believe it should be used,” said Dr. Ileana Herrera, chief of the ministry’s research council. “As a health ministry, we must always protect the human being.” [Reuters]
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How far can you beam information instantaneously? Try 10 miles, according to a study in Nature Photonics that pushes the limits of quantum teleportation to its greatest distance yet. At that distance, the scientists say, one can begin to consider the possibility of someday using quantum teleportation to communicate between the ground and a satellite in orbit.
As stories about quantum teleportation usually note, this isn’t the Starship Enterprise’s transporter: The weird quantum phenomenon makes it possible to send information, not matter, across a distance.
It works by entangling two objects, like photons or ions. The first teleportation experiments involved beams of light. Once the objects are entangled, they’re connected by an invisible wave, like a thread or umbilical cord. That means when something is done to one object, it immediately happens to the other object, too. Einstein called this “spooky action at a distance.” [Popular Science]
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One pest withers; another takes its place.
The Chinese government in 1997 approved Bt cotton. The crop, produced by U.S. agribusiness giant Monsanto, is genetically modified to produce a toxin that kills the bollworm, which has wreaked havoc on cotton crops. For its intended use, Bt cotton worked great: As DISCOVER covered in 2008, bollworms were in steep decline not only in cotton fields, but also in neighboring fields of corn and soybeans. But nature, as they say, abhors a vacuum, and targeting just one pest opens the door for others to come in. According to a decade-long study published in Science this week, it’s happening.
The new pest plaguing the 4 million hectares of Bt cotton in China is the mirid bug, research leader Kongming Wu says.
Numbers of mirid bugs (insects of the Miridae family), previously only minor pests in northern China, have increased 12-fold since 1997, they found. “Mirids are now a main pest in the region,” says Wu. “Their rise in abundance is associated with the scale of Bt cotton cultivation” [Nature].
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A magnitude 6.9 earthquake struck China’s southern Qinghai Province this week. The death toll now stand at more than 600, and rescuers pulled more than 1,000 people from the rubble alive. But, geologists say, this quake doesn’t seem linked to the massive one that shook the nearby province of Sichuan two years ago.
“It’s not the same fault, it’s a consequence of the same bit of global tectonics, which is the collision of India with Asia. That’s the only link I’d make,” said Dr David Rothery [BBC News]. The May 2008 Sichuan earthquake resulted from a thrust fault, which happens frequently in the region near the Himalayas where India and Asia collided long ago. But although this week’s quake happened not far from there, Rothery says it was a strike-slip event, which happens when there is sideways movement along a fault line. That’s the type of event that caused the January earthquake in Haiti.
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Despite burning curiosity, I have no idea what the Dalai Lama writes in his personal emails. But somewhere in China, hackers know.
China-based hacking operations have moved from murmurs to the front page since the fracas between the Chinese government and Google flared up three months ago. Besides the communist government’s flagrant and unapologetic Internet censorship, the search giant also accused China of harboring hackers who were behind politically motivated cyber attacks, like the targeting of Chinese human rights activists’ Gmail accounts. This week, computer security experts at the Munk School of Global Affairs at the University of Toronto announced that they’ve been trailing a group of China-based attackers they dub the “Shadow Network” for eight months. And they say they can show that those hackers have stolen a plethora of politically sensitive materials.
The intruders breached the systems of independent analysts, taking reports on several Indian missile systems. They also obtained a year’s worth of the Dalai Lama’s personal e-mail messages. The intruders even stole documents related to the travel of NATO forces in Afghanistan [The New York Times]. They also took political documents that outlined India’s concerns about its relations with Africa, Russia, and the Middle East. The core servers for the operation seem to be based in the city of Chengdu in southwest China.
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Is the Vietnamese government following China’s example, and muffling online dissent to pursue its own political ends? Internet giant Google seems to think so. Writing on the company’s online security blog, Neel Mehta of Google’s security team has revealed that tens of thousands of Vietnamese computers were subject to a potent virus attack this week–and that the attack targeted activists who are opposed to a Chinese mining project in Vietnam.
Google writes that the activists mistakenly downloaded malicious software that infected their computers. The infected machines could be used to spy on the users, and were also used to attack Web sites and blogs that voiced opposition to the mining project. This cyber attack, Google says, was an attempt to “squelch” opposition to bauxite mining in Vietnam, a highly controversial issue in the country. The computer security firm, McAfee Inc, which detected the malware, went a step further, saying its creators “may have some allegiance to the government of the Socialist Republic of Vietnam.” The Vietnamese Foreign Ministry had no immediate comment [Moneycontrol].
Google’s current spat with China began with a similar accusation, when the company accused Beijing of hacking into and spying on Chinese activists’ gmail accounts. Just this week, journalists in China said their email accounts were compromised because of yet another spyware attack.
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In the latest episode of the ongoing Google-Beijing dispute, Google’s attempt to bypass Chinese censors by sending Chinese users of its search engine to an uncensored Hong Kong-based site seems to have failed.
Within 24 hours of the rerouting, Beijing has clamped down, restricting mainland users’ access to the uncensored content on the Hong Kong site. Mainland Chinese users on Tuesday could not see uncensored Hong Kong content because government computers either disabled searches for objectionable content completely or blocked links to certain results [The New York Times]. Earlier, the Chinese government described Google’s move to redirect users to the Hong Kong site as “totally wrong.”
The clash comes two months after Google and China began a bitter standoff over internet censorship on the mainland. Instead of exiting the country entirely, Google has taken on Beijing by defying its censorship controls and sending mainland users to its Hong Kong site, where censorship rules are more lenient.
While the move seemed provocative, Google’s founders at first seemed to think that this redirection would be acceptable to the Chinese government. “We got reasonable indications that this was O.K.,” Sergey Brin, a Google founder and its president of technology, said. “We can’t be completely confident” [The New York Times]. Google said that while the search operations were being redirected to Hong Kong, it would continue to host its maps and music search service in China. However, it now seems that the company misjudged the Chinese government’s mood.
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When researchers rack up the carbon emitted across the world, the standard trends emerge: Europeans put less CO2 into the atmosphere than Americans, but China’s rapid ascent is sending its emissions shooting past those of the United States. However, this week in the Proceedings of the National Academy of Sciences, Stanford University researchers attempt to rejigger the numbers to reflect not just where the emissions are produced, but who is responsible for them—who’s buying and consuming the products that cause those emissions.
After study global trade databases, Steven Davis and Ken Caldiera say that in 2004, 23 per cent of global CO2 emissions – some 6.2 gigatonnes – went in making products that were traded internationally. Most of these products were exported from China and other relatively poor countries to consumers in richer countries [New Scientist]. The researchers say that developed countries outsource about a third of the carbon dioxide emissions connected to their consumption.
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China will soon have an outpost in space. The government has announced that its first unmanned space module, the Tiangong-1 (or “The Heavenly Palace”), will be launched next year.
The module will serve as a docking station for other spacecraft before being transformed into a permanent taikonaut residence and space lab within two years of the launch [Nature blog]. It was originally due to launch this year, but now will see flight only late in 2011, due to technical reasons, Chinese officials said. The Tiangong-1 is expected to be 30 feet long and capable of housing three taikonauts; future missions will add other modules to construct a larger Chinese space station.
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Recently at 80beats we’ve covered some of troubles China has had with toxins leaking into its waterways from petroleum spills and the environmental degradation caused by mining for rare Earth metals. But in a study this week in Science, Zhang Fusuo raises another concern: The country’s soil is on the path to being dangerously acidic.
Zhang’s team looked at the government’s research data for soil over 30 years, and also compared a survey of China’s soil conducted in the 2000s to one from the 1980s. For nearly all soil types found in China, soil pH has dropped 0.13 to 0.80 units since the early 1980s [ScienceNOW]. When soil lowers in pH and therefore becomes more acidic, it becomes more of a haven for pests and nematodes and less of one for plants—most plants prefer the neutral range between a pH of 6 and 8. If the trend continues, Zhang argues that China could have trouble producing enough food for its population.
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