China's tourism market boom over the three-day New Year's Day holidays did not end with the holidays. Over the past several days, bustling scenes of tourists enjoying ice and snow activities in Harbin in Northeast China's Heilongjiang Province and sunshine in South China's Hainan Province have become hot topics in China and abroad.

The busy, lively scenes are not limited to Harbin and Hainan. Other parts of China, including Northwest China's Xinjiang Uygur Autonomous Region, are also seeing robust growth in the number of tourists and revenues they generate. The tourism boom is expected to last through the Chinese Lunar New Year holidays, which is about a month away, according to travel agencies and experts.

The tourism boom not only illustrates the vitality and potential of China's consumption market, but also paves the way for the overall economic recovery in 2024, experts said, with some predicting solid economic recovery this year, though further policy measures are needed to tackle pressure and challenges.

On Friday, Harbin officially kicked off its annual International Ice and Snow Festival, declaring a public holiday. The festival also opened along with the launch of the China-France Year of Culture and Tourism, according to a statement from the Ministry of Culture and Tourism on Friday.

The opening of the International Ice and Snow Festival comes as Harbin became a sensation for its winter tourism boom since the New Year's Day holidays, attracting hundreds of millions of views and comments on social media platforms. Video footage of tourists in winter clothes dancing to music in Harbin posted by China Media Group has attracted more than 13.18 million views on Sina Weibo as of Friday afternoon.

While a final tally on attendees at the festival was not yet available on Friday, Harbin has already seen robust numbers. During the three-day New Year's holidays, the city saw about 3.05 million tourist trips and a total tourism revenue of about 5.91 billion yuan ($832 million) - both are historical highs, according to local official data.

Harbin is not alone in seeing a tourism boom. Xinjiang, which has become a top tourist spot in China for its beautiful nature and culture, also saw rapid growth in trips and revenue. During the New Year's Day holidays, Xinjiang received more than 1.66 million trips, up 195 percent year-on-year, and generated about 1.76 billion yuan in tourism revenue, up 424.3 percent year-on-year, according to local data.

Meanwhile, Hainan, which is known for its warm weather in the winter, also saw growth rates of over 60 percent in both trip numbers and tourism revenue over the New Year's Day holidays. More importantly, bookings for Hainan for the upcoming Chinese Lunar New Year holidays are already picking up pace, according to media reports.
Support for economic recovery

"As the Chinese Lunar New Year holidays approach, it is expected that the tourism market nationwide will continue to see a relatively big boom," Chen Fengying, an economist and former director of the Institute of World Economic Studies at the China Institutes of Contemporary International Relations, told the Global Times.

Chen, who was visiting Hainan, said that the tourism market in the province is "very hot" and consumers' willingness to travel is also "relatively high," which "will provide support for China's economic recovery," she said.

The tourism boom means increased spending and businesses activity for companies in a wide range of areas. For example, after Harbin became a sensation, various companies have seen rapid growth in business. Notably, share prices of Changbai Mountain Tourism Co, which is based in Northeast China's Jilin Province, surged more than 51 percent over the past five days.

As the ice-and-snow fever continues to grow after the Beijing Winter Olympics in 2022, China's winter tourism market is rising rapidly, benefiting areas such as Northeast China and Xinjiang, where ice and snow activities are popular. The China Tourism Academy predicted that during the 2024-2025 ice and snow season, a total of 520 million trips and a revenue of 720 billion yuan are expected.

Cao Heping, an economist at Peking University, said that he has been traveling across the country since the beginning of the year and has seen a robust recovery in the tourism industry.

"The rebound in consumer demand also reflects the development trend of China's economy. The recovery of consumption has a positive impact on consumer confidence and further boosts economic recovery," Cao told the Global Times on Friday.

The tourism boom has also lifted expectations among economists for China's economic recovery in 2024, with many also pointing to ramped up policy measures to boost consumption and other growth drivers.

Yu Yongding, an academic member of the Chinese Academy of Social Sciences and a prominent economist, wrote in an article shared with the Global Times on Friday that China's GDP growth target "should not be lower than 5 percent in 2024."

Yu also noted that to boost consumption, efforts must be taken to first increase residents' incomes, and consumption and investment, the two main growth drivers, should be in a virtuous cycle in which they promote each other. The article was first published on the WeChat account of China Finance 40 Forum.

Cao also said that amid challenges such as insufficient demand, policy support should be further intensified in several areas, including using various monetary policy tools to ensure ample liquidity to boost confidence among businesses and consumers, and support for new technologies and new emerging industries should also be increased.

"If all policies are carried out according to plan, I think it's possible that our GDP growth rate could hit as much as 5.5 percent in 2024," Cao said.

The Inter-Civilizational Communication and Global Development Forum kicked off in Beijing on Tuesday, attracting around 150 experts from more than 30 countries. 

The three-day event, hosted by the Party School of the Central Committee of the Communist Party of China (CPC), takes "tradition of civilization and paths to modernization" as its theme. Politicians, entrepreneurs, think tank experts, scholars, cultural ambassadors and diplomatic envoys from China and abroad have gathered together to discuss issues concerning communication among civilizations and global development.

 "The purpose of hosting this forum is to establish an international exchange platform for various parties to participate and converse with each other, contributing wisdom and strength to promote the exchange and mutual learning of civilizations among nations and to build a community with shared future for humanity," said Xie Chuntao, vice president of the Party School of the Central Committee of the CPC.

Dilma Rousseff, president of the New Development Bank gave a speech at the opening ceremony, noting that frank and respectful dialogue between different civilizations and countries will promote consensus and cooperation. She added that it is a guiding principle that the world needs to systematically follow.

 "The rich diversity of human civilizations can no longer be dismissive. The different objectives and development models followed by different nations cannot be ignored. It is not possible for a multicultural world to be forced to choose a single path. Often, they are looking with a single view of democracy, which actually leads to the weakening of democracies in many countries," she said, commenting on the significance of the forum.

Herta Daubler-Gmelin, former German justice minister, pointed out that besides cooperation in the economic and political fields, people-to-people cooperation in academic field is also very crucial.

 "We can do more. We can do better. This means information, as well as transparency in communication. And the recognition that every civilization contains dynamic elements. It's not frozen. It can open itself to converse with others," she said.

China's State Council Information Office released a white paper titled A Global Community of Shared Future: China's Proposals and Actions in September. John L. Thornton, chair emeritus of the Brookings Institution and co-chair of the Asia Society, quoted the white paper, pointing out that the most pressing task is to find a guiding beacon for the sustainable development of human civilization.

"There is no more important topic than the one we will be discussing this morning. I think of it as discussing the world we wish to be in, the world we wish to create for ourselves, our children, our grandchildren, and all future generations," said Thornton.

He also applauded for the Global Civilization Initiative and Global Initiative. "The aspiration China has is admirable. If it can be achieved, it will be a step forward for mankind, for the world," Thornton told the Global Times.

Three sub-forums on civilizational communication between China and Europe, China-Central Asia modernization development and leadership building, and China-Arab civilization exchange and modernization development, as well as a round-table discussion, will be held during this forum.

Mistakes can be learning opportunities, but the brain needs time for lessons to sink in.

When facing a fast and furious stream of decisions, even the momentary distraction of noting an error can decrease accuracy on the next choice, researchers report in the March 15 Journal of Neuroscience.

“We have a brain region that monitors and says ‘you messed up’ so that we can correct our behavior,” says psychologist George Buzzell, now at the University of Maryland in College Park. But sometimes, that monitoring system can backfire, distracting us from the task at hand and causing us to make another error.
“There does seem to be a little bit of time for people, after mistakes, where you’re sort of offline,” says Jason Moser, a psychologist at Michigan State University in East Lansing, who wasn’t part of the study.

To test people’s response to making mistakes, Buzzell and colleagues at George Mason University in Fairfax, Va., monitored 23 participants’ brain activity while they worked through a challenging task. Concentric circles flashed briefly on a screen, and participants had to respond with one hand if the two circles were the same color and the other hand if the circles were subtly different shades.

After making a mistake, participants generally answered the next question correctly if they had a second or so to recover. But when the next challenge came very quickly after an error, as little as 0.2 seconds, accuracy dropped by about 10 percent. Electrical activity recorded from the visual cortex showed that participants paid less attention to the next trial if they had just made a mistake than if they had responded correctly.

The cognitive demand of noting and processing the error seems to divert attention that would otherwise be devoted to the task, Buzzell says.

In real life, people usually have time — even if just a few seconds — to reflect on a mistake before having to make another decision, says Jan Wessel, a psychologist at the University of Iowa in Iowa City. But in some activities such as driving a car or playing a musical instrument, people must rebound from errors quickly while continuing to correctly carry out the rest of the task, he says. Those actions might push the limits of error processing.

Aside from being adorable, sea otters and Indo-Pacific bottlenose dolphins share an ecological feat: Both species use tools. Otters crack open snails with rocks, and dolphins carry cone-shaped sponges to protect their snouts while scavenging for rock dwelling fish.

Researchers have linked tool use in dolphins to a set of differences in mitochondrial DNA — which passes from mother to offspring — suggesting that tool-use behavior may be inherited. Biologist Katherine Ralls of the Smithsonian Institution in Washington, D.C., and her colleagues looked for a similar pattern in otters off the California coast. The team tracked diet (primarily abalone, crab, mussels, clams, urchins or snails) and tool use in the wild and analyzed DNA from 197 individual otters.

Otters that ate lots of hard-shelled snails — and used tools most frequently — rarely shared a common pattern in mitochondrial DNA, nor were they more closely related to other tool-users than any other otter in the population.

Unlike dolphins, sea otters may all be predisposed to using tools because their ancestors probably lived off mollusks, which required cracking open. However, modern otters only take up tools when their diet requires them, the researchers report March 21 in Biology Letters.

Could fluorescence matter to a frog? Carlos Taboada wondered. They don’t have bedroom black lights, but their glow may still be about the night moves.

Taboada’s question is new to herpetology. No one had shown fluorescence in amphibians, or in any land vertebrate except parrots, until he and colleagues recently tested South American polka dot tree frogs. Under white light, male and female Hypsiboas punctatus frogs have translucent skin speckled with dark dots. But when the researchers spotlighted the frogs with an ultraviolet flashlight, the animals glowed blue-green. The intensity of the glow was “shocking,” says Taboada of the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” in Buenos Aires.
And it is true fluorescence. Compounds in the frogs’ skin and lymph absorb the energy of shorter UV wavelengths and release it in longer wavelengths, the researchers report online March 13 in Proceedings of the National Academy of Sciences. But why bother, without a black bulb? Based on what he knows about a related tree frog’s vision, Taboada suggests that faint nocturnal light is enough to make the frogs more visible to their own kind. When twilight or moonlight reflects from their skin, the fluorescence accounts for 18 to 30 percent of light emanating from the frog, the researchers calculate.
Polka dot frogs, common in the Amazon Basin, have plenty to see in the tangled greenery where they breed. Males stake out multilevel territories in vast floating tangles of water hyacinths and other aquatic plants. When a territory holder spots a poaching male, frog grappling and wrestling ensues. Taboada can identify a distinctive short treble bleat “like the cry of a baby,” he says, indicating a frog fight.
Males discovering a female give a different call, which Taboada could not be coaxed to imitate over Skype. The polka dot frogs’ courtship is “complex and beautiful,” he says. For instance, a male has two kinds of secretion glands on the head and throat. During an embrace, he nudges and presses his alluring throat close to a female’s nose. If she breaks off the encounter, he goes back to clambering in rough figure eights among his hyacinths, patrolling for perhaps the blue-green ghost of another chance.

Sperm from stressed-out dads can carry that stress from one generation to another. “But one question that really hasn’t been addressed is, ‘How do dad’s experiences actually change his germ cell?’” Jennifer Chan, a neuroendocrinologist at the University of Pennsylvania, said November 13 in Washington, D.C., at the annual meeting of the Society for Neuroscience.

Now, from a study in mice, Chan and her colleagues have some answers, and even hints at ways to stop this stress inheritance.
The researchers focused on the part of the male reproductive tract called the caput epididymis, a place where sperm cells mature. Getting rid of a stress-hormone sensor there called the glucocorticoid receptor stopped the transmission of stress, the researchers found. When faced with an alarming predator odor, offspring of chronically stressed mice dads overproduce the stress hormone corticosterone. But mice dads that lacked this receptor in the epididymis had offspring with normal hormonal responses.

Earlier work has shown that epididymis cells release small packets filled with RNA that can fuse to sperm and change their genetic payload. Experiments on cells in dishes revealed that chronic exposure to corticosterone changed the RNA in these vesicles. The results offer an explanation of how stress can change sperm: By activating the glucocorticoid receptor, stress tweaks the RNA in epididymis vesicles. Then, those vesicles deliver their altered contents to sperm, passing stress to the next generation.

Similar vesicles are present in human seminal fluid, even after ejaculation. Chan and colleagues are testing whether humans carry similar signs of stress in these RNA-loaded vesicles by studying college students’ semen samples. Exam schedules will be used as a stress indicator, she said.

Bit by bit, Jupiter is revealing its deepest, darkest secrets.

The latest findings are in from the Juno spacecraft. And they unveil the roots of the planet’s storms, what lies beneath the opaque atmosphere and a striking geometric layout of cyclones parked around the gas giant’s north and south poles.

“We’re at the beginning of dissecting Jupiter,” says Juno mission leader Scott Bolton of the Southwest Research Institute in San Antonio. And the picture that’s emerging — still just a sketch — topples many preconceived notions. The results appear in four papers in the March 8 Nature.
Juno has been orbiting Jupiter since July 4, 2016, on a mission to map the planet’s interior (SN: 6/25/16, p. 16). The probe loops around once every 53 days, traveling on an elongated orbit that takes the spacecraft from pole to pole and as close as about 4,000 kilometers above the cloud tops.

As it plows through Jupiter’s gravity field, Juno speeds up and slows down in response to shifting masses inside the planet. By measuring these minute accelerations and decelerations, scientists can calculate subtle variations in Jupiter’s gravity and deduce how its mass is distributed. That lets researchers build up a three-dimensional map of the planet’s internal structure. At the same time, Juno snaps pictures in visible and infrared light. While other probes have extensively photographed much of the planet, Juno is the first to get an intimate look at the north and south poles.

“The whole thing is really intriguing, especially when you compare [Jupiter] to other giant planets,” says Imke de Pater, a planetary scientist at the University of California, Berkeley. “They are all unique, it looks like.”
Check out these four surprising new things we’ve learned that make Jupiter one of a kind:

1. Rings of cyclones
   Parked at each pole is a cyclone several thousand kilometers wide. That part isn’t surprising. But each of those cyclones is encircled by a polygonal arrangement of similarly sized storms — eight in the north and five in the south. The patterns have persisted throughout Juno’s visit.

“We don’t really understand why that would happen, and why they would collect up there in such a geometric fashion,” Bolton says. “That’s pretty amazing that nature is capable of something like that.”

2. More than skin deep
   Researchers have long debated whether the photogenic bands of clouds that wrap around Jupiter have deep roots or just skim the top of the atmosphere. Juno’s new look shows that the bands penetrate roughly 3,000 kilometers below the cloud tops. That’s 30 times as thick as the bulk of Earth’s atmosphere. While just a tiny fraction of Jupiter’s diameter, that’s deeper than previously thought, Bolton says.
3. Weighty weather
   Within those 3,000 kilometers lies what passes for an atmosphere on Jupiter. It’s the stage on which Jupiter’s turbulent weather plays out. The atmosphere alone is about three times as massive as our planet, or 1 percent of Jupiter’s entire mass, researchers estimate.
4. Stuck together
   Below the atmosphere, Jupiter is fluid. But unlike most fluids, the planet rotates as if it’s a solid mass. Like kids playing crack-the-whip, atoms of hydrogen and helium figuratively link arms and spin around the planet in unison, scientists report. Earlier results from Juno also indicate there’s no solid core lurking beneath this fluid (SN: 6/24/17, p. 14), so anyone dropped into the planet can expect a terribly long fall.

Many of these results are preliminary, and it’s unclear what it all means for how Jupiter operates. But what’s been learned so far, Bolton says, “is quite different than anybody anticipated.”

There’s been a lot of talk about fake news running rampant online, but now there’s data to back up the discussion.

An analysis of more than 4.5 million tweets and retweets posted from 2006 to 2017 indicates that inaccurate news stories spread faster and further on the social media platform than true stories. The research also suggests that people play a bigger role in sharing falsehoods than bots.

These findings, reported in the March 9 Science, could guide strategies for curbing misinformation on social media. Until now, most investigations into the spread of fake news have been anecdotal, says Filippo Menczer, an informatics and computer scientist at Indiana University Bloomington not involved in the work. “We didn’t have a really large-scale, systematic study evaluating the spread of misinformation,” he says.
To study rumormongering trends on Twitter, researchers examined about 126,000 tweet cascades — families of tweets composed of one original tweet and all the retweets born of that original post. All of those cascades centered on one of about 2,400 news stories that had been verified or debunked by at least one fact-checking organization.
Deb Roy, a media scientist at MIT, and colleagues investigated how far and fast each cascade spread. Discussions of false stories tended to start from fewer original tweets, but some of those retweet chains then reached tens of thousands of users, while true news stories never spread to more than about 1,600 people. True news stories also took about six times as long as false ones to reach 1,500 people. Overall, fake news was about 70 percent more likely to be retweeted than real news.
Roy and colleagues initially removed the activity of automated Twitter accounts called bots from the analysis. But when bot traffic was added back into the mix, the researchers found that these computer programs spread false and true news about equally. This finding indicates that humans, rather than bots, are primarily to blame for spreading fake news on the platform.

People may be more inclined to spread tall tales because these stories are perceived to be more novel, says study coauthor Soroush Vosoughi, a data scientist at MIT. Compared to the topics of true news stories, fake news topics tended to deviate more from the tweet themes users were exposed to in the two months before a user retweeted a news story. Tweet replies to false news stories also contained more words indicating surprise.

It’s not entirely clear what kinds of conversations these stories sparked among users, as the researchers didn’t inspect the full content of all the posts in the dataset. Some people who retweeted fake news posts may have added comments to debunk those stories. But Menczer says the analysis still provides a “very good first step” in understanding what kinds of posts grab the most attention.

The study could help guide strategies for fighting the spread of fake news, says Paul Resnick, a computational social scientist at the University of Michigan in Ann Arbor who was not involved in the work. For instance, the finding that humans are more liable to retweet falsehoods than bots may mean that social media platforms should focus on discouraging humans from spreading rumors, rather than simply booting off misbehaved bots.

To help users identify true stories online, social media sites could label news pieces or media outlets with veracity scores — similar to how grocery stores and food producers offer nutrition facts, says study coauthor Sinan Aral, an expert on information diffusion in social networks at MIT. Platforms also could restrict accounts reputed to spread lies. It’s still unclear how successful such interventions might be, Aral says. “We’re barely starting to scratch the surface on the scientific evidence about false news, its consequences and its potential solutions.”

“The strangest place in the whole universe might just be right here.” So says actor Will Smith, narrating the opening moments of a new documentary series about the wonderful unlikeliness of our own planet, Earth.

One Strange Rock, premiering March 26 on the National Geographic Channel, is itself a peculiar and unlikely creation. Executive produced by Academy Award–nominated Darren Aronofsky and by Jane Root of the production company Nutopia and narrated by Smith, the sprawling, ambitious 10-episode series is chock-full of stunningly beautiful images and CGI visuals of our dynamic planet. Each episode is united by a theme relating to Earth’s history, such as the genesis of life, the magnetic and atmospheric shields that protect the planet from solar radiation and the ways in which Earth’s denizens have shaped its surface.
The first episode, “Gasp,” ponders Earth’s atmosphere and where its oxygen comes from. In one memorable sequence, the episode takes viewers on a whirlwind journey from Ethiopia’s dusty deserts to the Amazon rainforest to phytoplankton blooms in the ocean. Dust storms from Ethiopia, Smith tells us, fertilize the rainforest. And that rainforest, in turn, feeds phytoplankton. A mighty atmospheric river, fueled by water vapor from the Amazon and heat from the sun, flows across South America until it reaches the Andes and condenses into rain. That rain erodes rock and washes nutrients into the ocean, feeding blooms of phytoplankton called diatoms. One out of every two breaths that we take comes from the photosynthesis of those diatoms, Smith adds.
As always, Smith is an appealing everyman. But the true stars of the series may be the eight astronauts, including Chris Hadfield and Nicole Stott, who appear throughout the series. In stark contrast to the colorful images of the planet, the astronauts are filmed alone, their faces half in shadow against a black background as they tell stories that loosely connect to the themes. The visual contrast emphasizes the astronauts’ roles as outsiders who have a rare perspective on the blue marble.
“Having flown in space, I feel this connection to the planet,” Stott told Science News . “I was reintroduced to the planet.” Hadfield had a similar sentiment: “It’s just one tiny place, but it’s the tiny place that is ours,” he added.
Each astronaut anchors a different episode. In “Gasp,” Hadfield describes a frightening moment during a spacewalk outside the International Space Station when his eyes watered. Without gravity, the water couldn’t form into teardrops, so it effectively blinded him. To remove the water, he was forced to allow some precious air to escape his suit. It’s a tense moment that underscores the pricelessness of the thin blue line, visible from space, that marks Earth’s atmosphere. “It contains everything that’s important to us,” Hadfield says in the episode. “It contains life.”

Stott, meanwhile, figures prominently in an episode called “Storm.” Instead of a weather system, the title refers to the rain of space debris that Earth has endured throughout much of its history — including the powerful collision that formed the moon (SN: 4/15/17, p. 18). Stott describes her own sense of wonder as a child, watching astronauts land on our closest neighbor — and how the travels of those astronauts and the rocks they brought back revealed that Earth and the moon probably originated from the same place.

It’s glimpses like these into the astronauts’ lives and personalities — scenes of Hadfield strumming “Space Oddity” on a guitar, for example, or Stott chatting with her son in the family kitchen — that make the episodes more than a series of beautiful and educational IMAX films. Having been away from the planet for a short time, the astronauts see Earth as precious, and they convey their affection for it well. Stott said she hopes that this will be the ultimate takeaway for viewers, for whom the series may serve as a reintroduction to the planet they thought they knew so well. “I hope that people will … appreciate and acknowledge the significance of [this reintroduction],” she said, “that it will result in an awareness and obligation to take care of each other.”
Editor’s note: This story was updated on March 19, 2018, to add a mention of a second executive producer.