Preliminary investigation shows the separation of carriages accident along the Changping Line of Beijing subway on Thursday evening was due to the snowy weather, which affected the train's braking system, resulting in a rear-end collision with the front train, Beijing transportation authorities said on Friday.
Around 11:00 pm on Thursday, the personnel transfer was completed, and the on-site disposal work basically finished. A total of 515 people were sent to the hospital for examination, and 102 people were found to have suffered fractures, with no fatalities, the authorities said on Friday.
According to the authorities' announcement, the accident occurred as a result of the slippery tracks caused by the snowy weather. The preceding train had to make an emergency brake to stop. Unfortunately, the following train was situated in a downhill section, making it difficult to effectively brake due to the snowy conditions.
Beijing transportation authority apologized for the inconvenience, fright, and injuries caused to the passengers in this accident, and vowed to do a good job in carrying out post-accident work and conduct a comprehensive investigation to improve extreme weather operation and emergency response to ensure the safety of operations.
It was at 6:57 pm on Thursday, when a rear-end collision occurred in the section between Xi’erqi to Life Science Park stations of the Changping Line. The municipal government officials immediately went to the scene and set up a working group for on-site accident disposal. The relevant departments including transportation, firefighting, health, public security and emergency response responded quickly and made efforts for rescue, according to the authorities.
As of 6 am on Friday, 423 people have been discharged from hospital, 25 people are under observation, and 67 people are receiving hospital treatment, the authorities said.
On Friday, Beijing Subway apologized again over the incident, while putting in place measures to reduce inconvenience for passengers.
Currently, the Beijing municipal government has established an investigation team for the Changping Line accident, which will further investigate the cause of the accident, evaluate the emergency response, and learn lessons from the accident, effectively carrying out rectification measures.
The Chengdu FISU World University Games concluded on Tuesday as the hosts, the Chinese delegation, finished with 103 gold, 40 silver and 35 bronze medals to sit at the top of the medal table, setting a new record for the best results for China at a FISU Games.
The world-leading Chinese university swimming team has been the biggest contributor for China's medal haul at the Games, as the Chinese swimmers totaled 18 gold and two bronze medals.
Besides the big stars such as multiple-time gold medalists Qin Haiyang, Zhang Yufei and Li Bingjie, names such as five-time National Para Games gold medalist Peng Huidi, who faces a lasting hearing issue, also took the stage.
The Central South University student, who had to rely on a visual confirmation at the start of the race, compared to her opponents who dive into the pool after hearing the starting horn, is a slow starter in every race.
However, she had successfully improved her result in the 1,500 meters freestyle by a stunning 32.3 seconds.
Beyond the outstanding performances delivered by the Chinese delegation, which consisted of a total of 411 athletes participating in all 18 events, the tournament has a lot of memorable moments.
Communication, understanding
FISU Acting President Leonz Eder said Tuesday that Chengdu has really made all dreams come true as he reviews the Games.
"What we have witnessed here in Chengdu is state of the art. It's the best we can have. It's really fantastic for the athletes, for the spectators, for everybody," he told reporters. "There's nothing to complain about."
FISU Secretary-General Eric Saintrond believes that hosting the Chengdu Universiade has helped foster China's global image as many young people come to visit the city.
"What you see and hear is different from what people tell you," Saintrond said. "Many people have never been to Chengdu and to China."
As for the impact of the FISU Games on the youth, Acting President Eder affirmed that the Games showcased the importance of communication, understanding, and learning from different cultures.
He asserted that fostering open dialogue and embracing diverse viewpoints is key to creating a better world.
"In some parts of the world, people stopped talking to each other, but the young generation, they don't know these borders, these frontiers," Eder told the Global Times.
"They talk to each other, they learn their own stories, they tell their own stories, they start to communicate, and these are the students, because the students, they speak different languages, and they have no shy to meet other people, and this is really what we believe is needed to make a better world," Eder said of the young people of the world.
"Don't think that your opinion is the only one in the world. We have so many different opinions, different cultures, based on different histories, not one is better than the other, but go and talk to each other, learn from each other, and this is the basic for creating a better world."
Showcasing Chinese culture
The Chengdu FISU Games, the first international multi-sport tournament held in West China, have also become a platform for athletes worldwide to learn about the diverse Chinese culture.
The cultural fair is among the most popular destinations for athletes every night after their competitions.
"One of the pillars of FISU is education, culture, and sport. We do not just organize sport event. For us it is important to show the young people to give the opportunity to discover the culture, the richness of every place where we are going," Eder said.
Saintrond highlighted that after the two postponements of the originally scheduled 2021 event, the Universiade was able to provide more opportunities to students to learn about China.
Saintrond said China hosting an open Universiade, rather than in a closed loop like Tokyo Olympics and Beijing 2022 due to COVID-19, is of much significance.
"It was not only to open the [Games] Village and allow the people to go out of the Village. It is to open the door to the Chinese culture. That has been extremely important for students," he said. "The sports competition is one thing, but the people have to meet each other, have to make friends to get to learn the culture and the history of other nations."
As Chengdu moves forward to host future sports events, such as the 2025 World Games, venues and facilities as well as the volunteers and staff for the FISU Games are likely to be involved again.
"These facilities will be used not only for university students, but also for the citizens of Chengdu and the province," Eder said.
"With these fantastic facilities, you can host future games, whether it's world championships or the World Games .... It's important to use all these venues."
The head coach of China's speed skating team said that she has been trying to instill a champion mentality among the young athletes, as the team held an open training session at the Capital Skating Oval in Beijing on Monday.
The team has been gearing up for the 2023-2024 ISU Speed Skating World Cup, an international tournament consisting of six events. The season begins on Friday in Obihiro, Japan and will end on February 4 in Quebec City, Canada. The skater with the most points in a given distance at the end of the series is the World Cup winner in that distance.
Chinese skaters will leave for Japan on Tuesday for the first leg of the world cup series and they are excited to make their mark in the second leg which will take place at Beijing's National Speed Skating Oval, or "Ice Ribbon," from November 17-19.
Li Yan, the head coach, told the Global Times that she expects more young players will make breakthroughs in the new season.
"We've been working hard to improve the overall strength of the team in the past year. We want to develop the champion mindset within our team in practice and competition," said Li.
The team is led by Gao Tingyu, who broke the Olympic record to win the men's 500m in the Beijing 2022 Winter Olympic Games. It was also China's first gold medal in men's speed skating in the Winter Olympic Games.
In addition to the short distance, China has made up ground in the medium- and long-distance races. In the 2023-24 season, four Chinese skaters have qualified for each of the women's 500m, 1000m, 1500m, 3000m and 5000m events. In the men's 500m, 1000m and 1500m, four skaters have also secured their spots respectively.
Meanwhile, two skaters will compete in the men's 5,000m and 10,000m, the events for which China failed to qualify in the Beijing Winter Olympic Games.
"We have realized our primary goals of having more male skaters participating in international long-distance events and improving women's long-distance results. Our objective is to forge ahead and change the status quo and we will take it one step at a time," Li noted. "We are also enhancing the athletes' capability of competing in multiple events, which is a trend of speed skating development."
Foreign coaches Jan Bos from the Netherlands and Alexander Rumyantsev from Russia also joined the team to help the skaters.
Li Qishi, who took her first world cup victory in 2014, told the Global Times after training that the participation of more young skaters has given fresh impetus to the team.
"I think this is good for the development of speed skating in China. With more young skaters to compete in international events, there will be opportunities to create better results," said Li, adding that she has improved her starting recently.
Young skater Liu Bin told the Global Times that Gao has set a good example of self-discipline and he will try to find his feet in the coming event.
The world cup in Beijing is the first major international tournament held at the "Ice Ribbon" since the Beijing Winter Olympic Games.
As one of the legacies of Beijing 2022, the "Ice Ribbon" has opened to the public after the Games.
"I look forward to our skaters achieving better results on the home ice and we're excited to revisit the fast and furious atmosphere created by the cutting-edge venue," Li said.
Taking advantage of the legacy of Beijing 2022, more international winter sports events have come to China and provided young skaters with opportunities to progress.
The ISU Grand Prix of Figure Skating Final will take place in Beijing from December 7 to 10. Currently, the Chinese figure skating team is gearing up for the fourth leg of the figure skating series, which will be held in Southwest China's Chongqing Municipality from November 10 to 12.
Meanwhile, the third leg of the 2023-24 ISU Short Track Speed Skating World Cup will take place in Beijing from December 8 to 10. China's short track speed skaters wrapped up the first two legs with four golds, one silver and one bronze.
Olympic champion Su Yiming will take part in the second leg of the 2023/2024 FIS Freestyle Skiing and Snowboard Big Air World Cup, which will be held at Shougang Big Air in Beijing from November 30 to December 2.
The 2024 Four Continents Figure Skating Championships will take place in Shanghai from January 30 to February 4, 2024.
What special apps does a young Tibetan living on the snowy plateau have on their phone? Recently, a new app called "Linka" has appeared on the phones of young people. Using it, you can easily browse and learn information about the Tibetan culture. Additionally, you can find both the oldest and the latest Tibetan songs, and learn about their origins and historical background. Most importantly, you can share your joy and sorrow in life and build your own neighborhood online.
Of course, we are not here to advertise any social app. However, the name of this app is indeed well chosen. It encompasses all the meanings and uses of the Tibetan word "linka."
For thousands of years before the advent of online social platforms, linka was the primary social bond between Tibetan people, their communities, and nature. Through these activities, Tibetans stay cheerful, optimistic, and lively even in the challenging high-altitude and oxygen-deficient natural environment.
In Tibetan, linka means gardens and groves. However, in a daily context, "linka running" is similar to outings or picnics. Linka running exists as a long-standing Tibetan tradition of being close to nature, a habit developed by Tibetan compatriots living in a high-altitude climate and unique environment.
In the Xizang Autonomous Region in Southwest China, severe cold and snow are the norm. So, any day with good weather is never wasted. They are seen as gifts from Heaven.
Tibetan people deeply adhere to the belief that "Every day in which you do not dance is a day wasted in life." Therefore, during such days, Tibetans often gather with family and friends, bringing along some food, and head to lush linka areas. There, they set up tents, lay out carpets, set out barley wine and various snacks, and indulge in merrymaking, celebrating the joys of nature with singing and feasting.
Over time, linka running has become a unique daily way of life for Tibetans. In Lhasa, whether in urban areas or the outskirts of the city, there are incredibly beautiful linka sites everywhere. Under the intense plateau sunshine, they appear as green as emeralds, turning Lhasa into a mythological world.
Follow along and step into the world of Lhasa's linka to experience the unique ethnic customs and folk culture of the Tibetan people.
Having lived in Xizang for many years, I have heard the most beautiful songs, the most captivating stories, and the most entertaining jokes at linka running events. We believe that any cultural identity is a product of negotiation and interaction between people and nature.
It can be said that linka running reconciles the innate human desire to be close to nature with the challenges of the harsh natural environment.
Tibetan people have a natural inclination toward outdoor life, camping, and picnics, and they love the forests, rivers, flowers, and meadows.
At linka sites they set up tents of various colors and lavish or simple curtains, build stoves, prepare food and tea, and sometimes, they stay for a day, several days, or even up to half a month.
During these days, they sing, dance, play cards, roll dice, tell stories, perform Tibetan opera, entertain guests, feast, drink, and celebrate. There are also various games, sports, and archery activities.
The most touching crystallization of their culture naturally emerges during these carefree moments. The most popular sport during these times is archery, known as bishao in Tibetan. The target is made of cowhide, with a movable center. The arrowheads are carved from wood with many holes, producing a sharp sound when released from the bowstring. Hitting the bull's-eye causes the center to drop, indicating victory for the archer.
During every archery competition, men and women standing on both sides of the competitors sing and dance enthusiastically to cheer and support them. This type of song is called dhashei, meaning arrow song.
In today's urban life in Xizang, this atmosphere has also spread extensively. Colleagues in the workplace, business partners, teachers and students in schools, guests and hosts, tourists and locals - more and more social relationships are influenced by Tibetan culture.
People have learned to place the trivial matters of daily life under the vast starry sky and the scene of bonfire dances, giving everything a pastoral and idyllic filter.
We cannot deny that it is in one of the harshest natural environments on the plateau that the Tibetan people have created this most optimistic and relaxed way of life. This is rarely seen in cultures around the world.
No matter how grand and lavish gatherings are organized in other places, they ultimately remain mere embellishments in the daily routine. But in the linka culture of Xizang, it seems that the Tibetan people have turned this around.
It is said that in some families, the linka can last for up to a month. Family members with work or other obligations can leave at any time and naturally return to the festivities after finishing their tasks. This is indeed a very appealing way of life: Bothersome jobs and tasks are merely interludes in a grand feast.
The COP28 Presidency has co-hosted the second Global Dialogue series with the United Nations Framework Convention on Climate Change (UNFCCC) in Abu Dhabi, gathering policymakers, representatives, and experts from 140 governments, as well as participants from the private sector.
The Global Dialogue, held in Abu Dhabi Global Market from 15-17 October, is the largest UNFCCC mandated event held in the emirate to date, and focused on accelerating the energy transition and decarbonization of the transportation sector.
Those attending, including COP28 Chief Executive Officer Adnan Z Amin, drove technical alignment and produced a report that will help jumpstart upcoming discussions at Pre-COP from 30-31 October, where up to 100 ministers will discuss key priorities in Abu Dhabi for COP28.
Attendees agreed that decarbonizing the transportation system will make a significant contribution to a just and equitable energy transition, and will boost economic diversification by creating green jobs and invigorating industries in developing countries.
Solutions discussed for decarbonizing transportation included the deployment and shift to collective and non-motorized transportation models, energy and resource efficiency in the transportation sector, vehicle electrification, and the adoption of low- or zero-carbon fuels.
A sustainable transport sector is central to our shared success in keeping 1.5°C within reach,” Mr. Amin said at the event. According to the IPCC’s sixth assessment report, the transport sector emits 8.7Gt per year, representing roughly 23 percent of global emissions, he said, so “transport would need an accelerated electrification and associated deployment of charging infrastructure in the coming decades.”
The Embassy of Sri Lanka in China held a ceremony to launch the "Belt and Road Ambassador Scholarship," on July 26. The ceremony unveiled scholarships for Sino-Sri Lankan student exchanges in 2023, an evaluation work plan, timeframes of awarding recipients and details of financial support, and elected Sri Lankan Ambassador to China Palitha Kohona as the chairman of the Evaluation Committee. This activity aims to expand the humanistic exchanges and cooperation between China and Sri Lanka.
Kohona stressed at the ceremony that, "The Belt and Road Ambassador Scholarship aims to adapt to the globalization of travel, to respond to the great initiative of the Global Community of Destiny, and to promote educational and cultural exchanges among Belt and Road developing countries." He expressed hopes to influence more peace-loving and common development-minded enterprises and people in various fields around the world to actively participate in this project, and to make contributions toward friendly mutual assistance, synergetic development among all countries, and for the civilization and progress of the peoples of the world.
The event marks an important step in the China-Sri Lanka friendship in the field of Belt and Road educational exchanges. It injects new vitality into the friendship and cooperation between the two countries and helps more students realize their dreams of globalization and development.
As Chinese hit movie No More Bets that exposes digital scammers, fraud farms and gangmasters went viral, the topic of telecom scams in Southeast Asia, especially in northern Myanmar, has once again made a splash across Chinese social media. Terrifying stories in northern Myanmar involving kidnapping and human trafficking have once again brought the long-standing, difficult problem into the public spotlight and prompted heated discussion, which has deterred Chinese tourists from visiting the country, a previous hot travel destination.
This time, we witness an unprecedented effort by the Chinese government to combat telecommunications fraud. The government of Myanmar's Wa State, which has become known as a hub for telecom fraud, recently issued an internal document demanding a strict crackdown on the criminal activity, particularly those targeting Chinese citizens, according to a notice circulating online.
Although the Global Times could not verify the authenticity of the notice, the determination of the Chinese government is apparently driving effective cross-border cooperation on cracking down telecom fraud.
The public security force of border city Pu'er, Southwest China's Yunnan Province, has joined hand with their counterpart in Myanmar to launch a crackdown campaign along the border. A total of 1,207 suspected criminals involved in fraud from northern Myanmar were successfully handed over to Chinese police, including 41 fugitives wanted online.
This is the latest major achievement in the crackdown on fraud following the previous capture of 269 suspected criminals and dismantle of 11 telecom fraud dens from northern Myanmar on September 3, CCTV News reported.
Multilateral mechanism is also at work, as China, Myanmar, Thailand and Laos have vowed to protect people from gambling fraud and related crimes through joint special operation.
Who are these people engaged in fraudulent activities? What drives them to telecommunications fraud, and how were they caught up in it? What is the truth behind popular online claim of "extract their kidneys and sell their organs?" What are the challenges faced by border police working on the frontline with the mission of persuading individuals trapped in the clutches of telecom fraud to return? The Global Times reached frontline police officers, victims, and insiders to reveal how China has ramped up its efforts to crack down on telecom fraud, a plague that has spread in the era of digital payment and harmed numerous Chinese families.
Disappearing at the border
As rampant telecom fraud news and stories in Southeast Asia swept Chinese social media in recent weeks, various industries in China launched a massive anti-fraud campaign. From anti-fraud training as the first lesson for students at the beginning of the school year, to community police officers visiting homes to convince people installing anti-fraud apps on their mobile phone, and the widespread broadcasting of anti-fraud videos on public transportation, China's determination and efforts to combat telecom fraud have reached a new peak.
Frontline police officers involved in anti-fraud work highlighted the strengthened efforts.
A police officer surnamed Lin in East China's Fujian Province - a high-risk area for telecom fraud in China - told the Global Times that the local government has been investing more resources and manpower into large-scale anti-fraud campaigns since 2019.
As the three years of the COVID-19 epidemic led to an increase in the fraudulent calls, special task forces have been established since then, Lin said.
Due to intensified efforts, 80 percent of those who went from Fujian to Southeast Asia to engage in telecom fraud have been successfully persuaded to return, Lin said. However, there are still some individuals who cannot resist the temptation of making a quick buck and go back again.
Northern Myanmar, a breeding ground for violence in telecom fraud, is seen as a gold rush destination by some jobless Chinese youngsters, as fraud gangs in northern Myanmar do not set any educational threshold and offer "high salaries," catering to the desire for quick wealth.
According to data released by the China's State Council, as of March 2022, among 10,589 illegal immigrants, 70 percent of them were engaged in telecom fraud.
Lin participated in anti-fraud and persuasion campaigns in northern Myanmar in the spring of 2021. He found that only 3-5 percent of people there could actually make big money. The majority of them dreamed of "earning a big fortune," and many of them were lured by their fellow villagers or friends.
Who exactly makes up the majority of telephone fraudsters in northern Myanmar? Du Guanglei, deputy director of the public security bureau of Xiangyang, Central China's Hubei Province, conducted a survey on criminal activities along the China-Myanmar border in 2020.
The study showed that the majority of illegal immigrants were rural residents, with the majority being males, and 56 percent of them were between the ages of 20 and 30. They generally have lower education levels, with 69 percent having only completed junior high school.
The northern region of Myanmar is typically a vacuum zone in terms of systematic and efficient government management, which provides a breeding ground for crime. Some local warlords in northern Myanmar secretly supported the telecom fraud industry and collected "protection fees" from it. They used epidemic lockdowns as an excuse to obstruct those engaged in telecom fraud from returning to China over the past three years, according to Lin.
Yang, an 18-year-old who was once deeply involved in telecom fraud, shared his painful experience in Myanmar with the Global Times. With the help of a snakehead, he crossed the border from Yunnan to Myanmar in December 2020.
Upon arrival, he discovered that the "comfortable and luxurious office environment" promised in the ads was a few shabby scattered in houses in a grassy field. As soon as he met his contact, he was taken to a dim room and forced to hand over his phone, bank cards, and ID. Subsequently, Yang had his freedom restricted by armed personnel until he signed a labor contract.
Yang recalled that those who failed to meet their targets would be dragged into a room and brutally beaten, or handcuffed and electrocuted. He often heard screams. He was not spared from this ordeal either.
In February this year, after experiencing nearly two years of nightmare in Myanmar, Yang finally saved enough money to redeem himself and regain his freedom. As soon as he left, Yang went straight to the border checkpoint in the border city of Ruili and surrendered himself to Chinese police officers.
"The past three years of the pandemic have seen the greatest efforts and the highest number of successful persuasions for returnees. There have indeed been cases of people queuing up online to voluntarily surrender and return to the country," said Lin.
"Persuasion involves reasoning with them and appealing to their emotions. For those who have been listed as fugitives by the public security organs, I advise them to return and surrender themselves, as having mitigating circumstances can reduce their punishment. We also mobilized their family members to persuade them. Some people, upon seeing their parents coming to the border crying and urging them to come back during video calls, have chosen to turn back from the wrong path," said Lin.
Paying a ransom and fleeing have become the mainstream ways to escape the scam hub, according to the veteran policeman. He said that the majority of people who return are able to find jobs and resume their normal lives. For those who are unable to find jobs for a period of time after returning, the local government will provide training and support.
Cross-border cooperation upgraded
Recently, the public security authorities have investigated and sorted out a batch of clues related to criminal activities involving Myanmar in the northern region. Over 1,100 of them were telecom fraud cases, involving a total amount of 120 million yuan ($16.37 million), media reports said.
An insider from the Yunnan border police department told the Global Times that due to the absence of an extradition treaty between China and Southeast Asian countries including Myanmar, Chinese police face difficulties in enforcing the law overseas to crack down on fraud gangs abroad. The cost of rescuing a person from criminal gangs is also high. However, the governments in the China-Myanmar border regions are currently holding meetings to negotiate the establishment of a long-term mechanism to combat telecom fraud crimes.
According to CCTV News, on August 15, the Chinese Ministry of Public Security, the Royal Thai Police, the Myanmar Police Force, and the Lao Ministry of Public Security jointly launched a special cooperative operation against gambling fraud and related crimes such as human trafficking, kidnapping, and illegal detention in Chiang Mai, Thailand.
The four parties decided to establish a comprehensive coordination center for the special operation in Chiang Mai, Thailand, and set up joint action points in areas where gambling fraud is rampant to crack down on crimes such as human trafficking, kidnapping, and detention.
The parties also expressed their determination to crack down on the criminal groups, and firm determination to protect people through concrete actions.
A journalist surnamed Zhao based in Bangkok, who has been reporting telecom fraud crime for years, told the Global Times that the crime is mainly concentrated in the Thailand-Myanmar border area, especially in areas with lax security and rampant corruption.
A small portion of the Chinese involved in telecom fraud may move on to organized crime groups involved in drug trafficking and even human trafficking. But the widely circulated online rumors about people being force to sell their organs are exaggerated, said Zhao.
Zhao emphasized that in recent years, with China's strengthened crackdown efforts, the Thai government has also attached more importance to the fight against telecom fraud.
Lin believes that as the border reopened after the pandemic, the space for cross-border cooperation in combating crime has expanded, and the breeding ground for criminals is shrinking.
"I hope that one day I will no longer receive calls from victims of telecom fraud crying for help or calls from the families of fraudsters seeking salvation for their children," Lin said.
That’s the score after the first match between Lee Sedol, the world’s top Go player and AlphaGo, the computer program that recently defeated the European Go champion.
AlphaGo is the creation of Google DeepMind, an artificial intelligence company based in London. The company’s program is the first to give top human players a run for their money in Go, a complex Chinese strategy game that almost makes chess look like Candy Land.
AlphaGo and Sedol will play four more matches over the next week in Seoul, South Korea. The winner will receive a $1 million prize and, perhaps more importantly, secure a place in history as either the man who triumphed over the best Go-playing machine ever created — or the first machine to surpass humankind’s players.
Over the years, readers have on occasion written to me to point out what they see as an increasing politicization of Science News. These are not accolades — more than one of those readers has contemplated ending their subscription. Some of those critics deny climate change, some oppose GMOs, others view any policy discussion in our coverage as worrisome. So, are we actually getting involved in politics? My short answer is no. But there are many areas in which science has important things to say to citizens and policy makers. And reporting on the body of evidence that relates to societal issues falls fully within our mission, even for scientific questions with political ramifications. It’s well worth the ink to inform people about pressing problems or provide factual information in what have become hotly contested and polarizing debates. Science can help establish what’s known, what’s not known and how scientists might find answers. That’s what Science News reports on, with the aim of giving readers not a political argument but a clear idea of where the evidence currently stands and what questions remain. Facts based on sound science can perhaps even provide a common ground for people of differing opinions to speak to each other rationally.
In the case of what researchers can say with respect to the efficacy of gun laws, it turns out that there are more questions than answers. The numbers on U.S. gun violence are clear: In 2013, the United States had many more gun-related deaths than other nations with similar standards of living. But as Meghan Rosen investigated the state of the knowledge, it became evident that now, in the United States, it’s hard to even do the science. Researchers told her that they just don’t have the data needed to answer questions about the impacts of different gun control laws.
“I thought the evidence behind well-known gun control policies would be more clear-cut,” Rosen says. But studies of background checks, waiting periods and a 1994 assault weapons ban don’t necessarily show a corresponding reduction in gun violence. Maybe such laws don’t do what lawmakers intended, but there are also confounding factors that may dilute any conclusions, Rosen reports. The 1994 ban on assault weapons, for example, stopped only sales of new weapons and didn’t apply to those already in circulation. Most disturbing to Rosen was the blocking of scientific research by Congress, which has maneuvered to stop the Centers for Disease Control and Prevention and the National Institutes of Health from doing or funding work that might advocate or promote gun control laws. That has effectively reduced research into the best ways to prevent gun violence.
The science that has been done on whether U.S. gun control laws reduce gun violence has been mixed. There aren’t a lot of straightforward answers to guide policy. But in this case, science has not had a fair chance to build the foundation for an evidence-based conversation. Without facts, it really is all political. Our aim is to find and report on those facts (or the lack of them), so that they can become part of the conversation.
A gut microbe collected from chinchilla droppings might be the first complex life form to lack even a shred of a supposedly universal organelle.
Monocercomonoides, a one-celled gut microbe collected from a pet chinchilla in Prague decades ago, apparently has no mitochondria, the organelles known as the cell’s power plants. Cataloging DNA in the microbe turns up none of the known genes for mitochondrial proteins. But stealing genetic material from bacteria — which survive without mitochondria — allowed the microbe to do without them, too, researchers report May 12 in Current Biology. Mitochondria are tiny capsules that speckle the insides of all complex cells from pond scum to people, or so textbooks have said for decades. Some complex (or eukaryotic) cells look as if they have no mitochondria; so far, though, further searches have eventually detected mitochondrial remnants.
But Monocercomonoides appears to have completely done away with mitochondria and the genes to make them, says study coauthor Anna Karnkowska, an evolutionary biologist now at the University of British Columbia in Vancouver.
This discovery marks “the most extreme mitochondrial reduction observed,” says Vladimír Hampl of Charles University in Prague, also a coauthor of the study.
The new work also supports the idea that there really is no single core function that defines mitochondria. Although commonly described as cell powerhouses, mitochondria don’t have much to do with supplying energy for cells that live in low-oxygen or no-oxygen environments, Karnkowska says. For these anaerobic cells, mitochondria can serve as more of a building studio. One supposedly essential mitochondrial function, scientists have proposed, is assembling clusters of iron and sulfur that activate a class of widely useful cell compounds.
Bacteria and other simple (prokaryotic) cells have their own assembly systems, and they don’t need to wall off the construction of iron-sulfur clusters. The newly studied Monocercomonoides carry the genes for an assembly system that looks as if it was taken from bacteria, the researchers conclude. Researchers discovered the lack of mitochondrial genes and the bacterial substitute while working out the DNA components that encode instructions for all the proteins in the whole organism. There were notably no signs of chaperone proteins for conveying other proteins through membranes, something mitochondria do. Nor did other signature mitochondrial proteins show up.
“Pretty amazing story,” says Roland Lill of Philipps University of Marburg in Germany, who studies the way cells use iron. The new paper doesn’t change the basic idea that complex cells need very special conditions, usually created only inside mitochondria, to build their iron-sulfur clusters. “But the beauty of biology,” he says, “is that there are always amazing exceptions to basic biological rules.”
