Month: January 2023

Far below our feet, a giant may have started moving against us.

Earth’s inner core, a hot iron ball the size of Pluto, has stopped spinning in the same direction as the rest of the planet and might even be rotating the other way, research suggested on Monday.

Roughly 5,000 kilometers (3,100 miles) below the surface we live on, this “planet within the planet” can spin independently because it floats in the liquid metal outer core.

Exactly how the inner core rotates has been a matter of debate between scientists — and the latest research is expected to prove controversial.

What little we know about the inner core comes from measuring the tiny differences in seismic waves — created by earthquakes or sometimes nuclear explosions — as they pass through the middle of the Earth.

Seeking to track the inner core’s movements, new research published in the journal Nature Geoscience analysed seismic waves from repeating earthquakes over the last six decades.

The study’s authors, Xiaodong Song and Yi Yang of China’s Peking University, said they found that the inner core’s rotation “came to near halt around 2009 and then turned in an opposite direction.”

“We believe the inner core rotates, relative to the Earth’s surface, back and forth, like a swing,” they told AFP.

“One cycle of the swing is about seven decades,” meaning it changes direction roughly every 35 years, they added.

They said it previously changed direction in the early 1970s and predicted the next about-face would be in the mid-2040s.

The researchers said this rotation roughly lines up with changes in what is called the “length of day” — small variations in the exact time it takes Earth to rotate on its axis.

Stuck in the middle

So far there is little to indicate that what the inner core does has much effect on we surface dwellers.

But the researchers said they believed there are physical links between all Earth’s layers, from the inner core to the surface.

“We hope our study can motivate some researchers to build and test models which treat the whole Earth as an integrated dynamic system,” they said.

Experts not involved in the study expressed caution about its findings, pointing to several other theories and warning that many mysteries remain about the center of the Earth.

“This is a very careful study by excellent scientists putting in a lot of data,” said John Vidale, a seismologist at the University of Southern California.

“[But] none of the models explain all the data very well in my opinion,” he added.

Vidale published research last year suggesting the inner core oscillates far more quickly, changing direction every six years or so. His work was based on seismic waves from two nuclear explosions in the late 1960s and early 1970s.

That timeframe is around the point when Monday’s research says the inner core last changed direction — which Vidale called “kind of a coincidence.”

Geophysicists ‘divided’

Another theory — which Vidale said has some good evidence supporting it — is that the inner core only significantly moved between 2001 to 2013 and has stayed put since.

Hrvoje Tkalcic, a geophysicist at the Australian National University, has published research suggesting that the inner core’s cycle is every 20 to 30 years, rather than the 70 proposed in the latest study.

“These mathematical models are most likely all incorrect because they explain the observed data but are not required by the data,” Tkalcic said.

“Therefore, the geophysical community will be divided about this finding and the topic will remain controversial.”

He compared seismologists to doctors “who study the internal organs of patients’ bodies using imperfect or limited equipment.”

Lacking something like a CT scan, “our image of the inner Earth is still blurry,” he said, predicting more surprises ahead.

That could include more about a theory that the inner core might have yet another iron ball inside it — like a Russian doll.

“Something’s happening and I think we’re going to figure it out,” Vidale said. “But it may take a decade.”

Source: Voice of America

The U.S. Food and Drug Administration is proposing switching to an annual COVID-19 vaccination campaign for the country, similar to the flu shot.

In documents posted online Monday, the agency said the new strategy would provide a simplified approach to the coronavirus vaccine. The proposed plan is set to be discussed at a meeting this week of FDA scientists and the agency’s panel of external vaccine advisers.

The FDA said most Americans would need only one annual vaccination to help protect them against the coronavirus, while others — including the elderly, the very young and those with weakened immune systems — might need a two-dose inoculation for additional protection.

Under the current vaccination system, a person must get two doses of the original COVID-19 vaccine, which targets the coronavirus that emerged in 2020. Following that, booster shots have been recommended at periodic intervals, with the latest boosters targeting both the original virus and the omicron variant.

The proposed FDA changes would do away with the system of primary vaccinations and boosters and would instead recommend for most Americans a single vaccine dose that is developed annually.

As with the flu shot, vaccine makers and independent experts would aim to develop a shot that targets the virus strains most likely to dominate in the winter season. The targeted strains could be changed every year.

The FDA is also considering making the shots interchangeable, so people would not have to keep track of which vaccine brand they receive.

The agency is hoping the changes will make it easier for Americans to continue with their COVID inoculations amid a waning interest from the public to receive repeated booster shots.

While more than 80% of the U.S. population has had at least one vaccine dose, only 16% of eligible Americans have received the latest booster shot, according to The Associated Press.

The proposed FDA changes also come as experts have been publicly debating how effective the latest booster shots have been at increasing protection against COVID-19, especially in healthy adults.

Source: Voice of America

One of the world’s most prestigious and storied surfing contests is expected to be held Sunday in Hawaii for the first time in seven years.

And this year female surfers will be competing alongside the men for the first time in the 39-year history of The Eddie Aikau Big Wave Invitational.

The event — alternatively known simply as The Eddie — is a one-day contest held in Waimea Bay on Oahu’s North Shore only when the surf is consistently large enough during the winter big wave surfing season from mid-December through mid-March. The wind, the tides and the direction of the swell also have to be just right.

“Large enough” means 6 meters by Hawaii measurements. That’s equivalent to about 12 meters when measured by methods used in the rest of the U.S. Before this year, conditions have only aligned for it to be held nine times since the initial competition in 1984.

Organizer Clyde Aikau said at a news conference Friday that he was expecting waves to reach 7.6-9 meters by Hawaii measurements or 15-18 meters on the national scale.

“Yes, The Eddie will go on Sunday,” he said.

Other places around the world have big wave surfing events: Mavericks in California, Nazare in Portugal and Peahi on Hawaii’s Maui Island. But author Stuart Coleman says The Eddie is distinguished by how it honors Eddie Aikau, a legendary Native Hawaiian waterman, for his selflessness, courage and sacrifice.

“What makes this contest the most unique is that it’s in memory of a particular individual who really has transcended his time and place when he lived,” said Coleman, who wrote Eddie Would Go, a biography of Aikau.

Edward Ryon Makuahanai Aikau rose to prominence as the first lifeguard hired by Honolulu to work on Oahu’s North Shore and was revered for saving over 500 people during his career. He’s also famous for surfing towering waves that no one else would dare ride.

Aikau died in 1978 at the age of 31 during an expedition to sail a traditional Polynesian voyaging canoe from Honolulu to Tahiti. Just hours out of port, the giant double-hulled canoe known as the Hokulea took on water and overturned in stormy weather. Aikau volunteered to paddle several miles to nearby Lanai Island on his surfboard to get help for the rest of the crew but was never seen again.

The U.S. Coast Guard rescued the remaining crew a few hours later after being alerted by a commercial plane that spotted the canoe.

Coleman said The Eddie is about the best of big wave surfing and the best of Hawaiian culture.

“They always say at the opening ceremony, where they gather to launch the holding period, ’This is not just a contest. We’re not surfing against each other. We’re surfing in the spirit of Eddie,’” Coleman said.

This year organizers have invited 40 competitors and 18 alternates from around the world, including Kelly Slater, who has won a record 11 world surfing titles. John John Florence, who hails from the North Shore and who has won two back-to-back world titles, has also been asked to join.

Keala Kennelly of Kauai, a women’s big wave surf champion, is among the female invitees.

Mindy Pennybacker, a surf columnist for the Honolulu Star-Advertiser and author of the upcoming book Surfing Sisterhood Hawaii: Wahine Reclaiming the Waves said there’s long been an assumption that Waimea was too dangerous for women and they couldn’t surf there.

She said they’ve had to fight to be included and have meanwhile shown that they could handle big waves in spots around the world.

“To see women — not only women surfing Waimea but women and men sharing the same event together, with mutual respect and equality — I’m just really thrilled at the thought,” Pennybacker said.

The contest is expected to attract tens of thousands of spectators to the two-lane highway winding through the North Shore and the small towns that dot the coastal community.

Kathleen Pahinui, the chairperson of the North Shore Neighborhood Board, said it will be good for businesses, restaurants and shops. She urged visitors to carpool and take the bus because the roads will be congested.

“I wish all the participants the best of luck,” she said.

Source: Voice of America

Hundreds of mourners gathered at Graceland on Sunday morning to pay their respects to singer Lisa Marie Presley in a memorial service at the mansion in Memphis, Tennessee, she inherited from her father, rock legend Elvis Presley.

Presley died on Jan. 12 at the age of 54. Earlier that day, she had been rushed to a Los Angeles-area hospital after reportedly suffering cardiac arrest at her home.

“Our heart is broken, Lisa, and we all love you,” her mother, Priscilla Presley, said at the service on the front lawn of Graceland. “Lisa Marie Presley was an icon, a role model, a superhero to many people all over the world.”

Singers Alanis Morissette, Billy Corgan and Axl Rose performed.

Lisa Marie Presley is survived by her daughters, actress Riley Keough and 14-year-old twins Finley and Harper Lockwood.

Two days before her death, she had appeared with her mother, Priscilla Presley, at the Golden Globe Awards in Beverly Hills, California, where actor Austin Butler won the best actor award for portraying her father in the film “Elvis.” Butler paid tribute to both women in his acceptance speech.

Presley began her music career in the 2000s with two albums, “To Whom It May Concern” and “Now What,” that made the top 10 of the Billboard 200 album chart.

She was married and divorced four times, including to pop star Michael Jackson and actor Nicholas Cage.

She was the only child of one of the greatest stars in American music, and was 9 years old when Elvis Presley died of heart failure at age 42 in 1977 at Graceland. The mansion is now a popular tourist attraction.

Elvis Presley and other members of his family are buried at Graceland’s Meditation Garden.

Lisa Marie Presley was buried there before the memorial service alongside the grave of her son, Benjamin Keough, who died in 2020 at age 27, a death ruled a suicide by the Los Angeles County coroner. In a recent essay, she had described herself as “destroyed” by her son’s death.

After the memorial service, mourners were due to form a procession past Lisa Marie Presley’s grave.

Source: Voice of America

Countless artists have taken inspiration from “The Starry Night” since Vincent Van Gogh painted the swirling scene in 1889.

Now artificial intelligence systems are doing the same, training themselves on a vast collection of digitized artworks to produce new images you can conjure in seconds from a smartphone app.

The images generated by tools such as DALL-E, Midjourney and Stable Diffusion can be weird and otherworldly but also increasingly realistic and customizable — ask for a “peacock owl in the style of Van Gogh” and they can churn out something that might look similar to what you imagined.

But while Van Gogh and other long-dead master painters aren’t complaining, some living artists and photographers are starting to fight back against the AI software companies creating images derived from their works.

Two new lawsuits —- one this week from the Seattle-based photography giant Getty Images —- take aim at popular image-generating services for allegedly copying and processing millions of copyright-protected images without a license.

Getty said it has begun legal proceedings in the High Court of Justice in London against Stability AI — the maker of Stable Diffusion —- for infringing intellectual property rights to benefit the London-based startup’s commercial interests.

Another lawsuit filed Friday in a U.S. federal court in San Francisco describes AI image-generators as “21st-century collage tools that violate the rights of millions of artists.” The lawsuit, filed by three working artists on behalf of others like them, also names Stability AI as a defendant, along with San Francisco-based image-generator startup Midjourney, and the online gallery DeviantArt.

The lawsuit said AI-generated images “compete in the marketplace with the original images. Until now, when a purchaser seeks a new image ‘in the style’ of a given artist, they must pay to commission or license an original image from that artist.”

Companies that provide image-generating services typically charge users a fee. After a free trial of Midjourney through the chatting app Discord, for instance, users must buy a subscription that starts at $10 per month or up to $600 a year for corporate memberships. The startup OpenAI also charges for use of its DALL-E image generator, and StabilityAI offers a paid service called DreamStudio.

Stability AI said in a statement that “Anyone that believes that this isn’t fair use does not understand the technology and misunderstands the law.”

In a December interview with The Associated Press, before the lawsuits were filed, Midjourney CEO David Holz described his image-making subscription service as “kind of like a search engine” pulling in a wide swath of images from across the internet. He compared copyright concerns about the technology with how such laws have adapted to human creativity.

“Can a person look at somebody else’s picture and learn from it and make a similar picture?” Holz said. “Obviously, it’s allowed for people and if it wasn’t, then it would destroy the whole professional art industry, probably the nonprofessional industry too. To the extent that AIs are learning like people, it’s sort of the same thing and if the images come out differently then it seems like it’s fine.”

The copyright disputes mark the beginning of a backlash against a new generation of impressive tools — some of them introduced just last year — that can generate new images, readable text and computer code on command.

They also raise broader concerns about the propensity of AI tools to amplify misinformation or cause other harm. For AI image generators, that includes the creation of nonconsensual sexual imagery.

Some systems produce photorealistic images that can be impossible to trace, making it difficult to tell the difference between what’s real and what’s AI. And while most have some safeguards in place to block offensive or harmful content, experts say it’s not enough and fear it’s only a matter of time until people utilize these tools to spread disinformation and further erode public trust.

“Once we lose this capability of telling what’s real and what’s fake, everything will suddenly become fake because you lose confidence of anything and everything,” said Wael Abd-Almageed, a professor of electrical and computer engineering at the University of Southern California.

As a test, The Associated Press submitted a text prompt on Stable Diffusion featuring the keywords “Ukraine war” and “Getty Images.” The tool created photo-like images of soldiers in combat with warped faces and hands, pointing and carrying guns. Some of the images also featured the Getty watermark, but with garbled text.

AI can also get things wrong, like feet and fingers or details on ears that can sometimes give away that they’re not real, but there’s no set pattern to look out for. And those visual clues can also be edited. On Midjourney, for instance, users often post on the Discord chat asking for advice on how to fix distorted faces and hands.

With some generated images traveling on social networks and potentially going viral, they can be challenging to debunk since they can’t be traced back to a specific tool or data source, according to Chirag Shah, a professor at the Information School at the University of Washington, who uses these tools for research.

“You could make some guesses if you have enough experience working with these tools,” Shah said. “But beyond that, there is no easy or scientific way to really do this.”

But for all the backlash, there are many people who embrace the new AI tools and the creativity they unleash. Searches on Midjourney, for instance, show curious users are using the tool as a hobby to create intricate landscapes, portraits and art.

There’s plenty of room for fear, but “what can else can we do with them?” asked the artist Refik Anadol this week at the World Economic Forum in Davos, Switzerland, where he displayed an exhibit of his AI-generated work.

At the Museum of Modern Art in New York, Anadol designed “Unsupervised,” which draws from artworks in the museum’s prestigious collection — including “The Starry Night” — and feeds them into a massive digital installation generating animations of mesmerizing colors and shapes in the museum lobby.

The installation is “constantly changing, evolving and dreaming 138,000 old artworks at MoMA’s Archive,” Anadol said. “From Van Gogh to Picasso to Kandinsky, incredible, inspiring artists who defined and pioneered different techniques exist in this artwork, in this AI dream world.”

For painters like Erin Hanson, whose impressionist landscapes are so popular and easy to find online that she has seen their influence in AI-produced visuals, she is not worried about her own prolific output, which makes $3 million a year.

She does, however, worry about the art community as a whole.

“The original artist needs to be acknowledged in some way or compensated,” Hanson said. “That’s what copyright laws are all about. And if artists aren’t acknowledged, then it’s going to make it hard for artists to make a living in the future.”

Source: Voice of America

Every Lunar New Year without fail, Kat Lieu’s mother would make her steamed nian gao, which is a sweet rice — or mochi — cake. It was a tasty tradition of having dessert for breakfast.

The Seattle-based author of the “Modern Asian Baking at Home” cookbook and founder of the Subtle Asian Baking online group switches things up for her 9-year-old son. He gets mochi waffles made with bright green pandan the first morning of the new year.

“This year again I’m going to make the waffles,” said Lieu, who is half Chinese and half Vietnamese. “I’m also going to make the steamed nian gao and things like that, and try to have him appreciate it more, too.”

Unlike Thanksgiving, when pie is a given at many households, desserts and confections at Lunar New Year are as varied as the Asian diasporas around the world that celebrate it.

Families from China to the U.S. to Vietnam will mark the new year on Sunday with the usual customs such as elaborate dinners and red envelopes with money for children. There will be customary sweet snacks like nian gao. But in this age of social media, food savviness and cultural pride, younger generations of Asians also are getting more inspired to have dessert courses that are whimsical and creative — from black sesame financiers to peanut butter miso cookies.

In Beijing, residents have been flocking to the flagship store of Daoxiangcun, one of the city’s best-known bakeries, for new year-themed dessert gift boxes in which some of the pastries were shaped like a rabbit, the animal of the upcoming year’s Chinese zodiac.

On Saturday, people stood in line outside the store for hours for the chance to buy baked goods, according to a staffer. Even at a less popular branch half a block away, customers still had to wait 40 minutes.

For Lexi Li, it was about bringing a little something to loved ones even though it meant waiting in the line for seven hours in sub-freezing temperatures.

“I don’t really like desserts and pastries, but I just want to bring something home as a gift,” said the 30-year-old, who walked out with a stack of eight boxes for friends and family in her hometown Taiyuan, in central China’s Shanxi province.

Known for its diverse food culture, China offers a variety of Lunar New Year desserts that are usually rice-based or flour-based. They include tang yuan, which are mochi-esque rice balls with black sesame or peanut paste in soup, as well as sesame balls, almond cookies, candied lotus seeds and fat goh — steamed cakes also known as prosperity cakes.

Nian gao remains one of the most popular options. Its key ingredient is glutinous rice flour, along with other things such as taro, dates, jujube and red bean paste, depending on the variety. Its name is a homonym for “higher year” in Chinese, meaning a more prosperous year ahead and expressing wishes for children to grow taller.

The well-preserved tradition plays a vital role in passing on Chinese culture because it keeps alive a food culture honoring grains and reminding people of how festivals are celebrated going back to the seventh century, according to Siu Yan Ho, a Hong Kong-based expert in Chinese food culture.

“Food is memory, and this memory is connected with festivals,” Siu said.

In Vietnam, which is celebrating the Year of the Cat, sweets also differ by region. Vietnamese people eat nian gao, which they call banh to. They also eat che kho gao nep, a pudding made with sticky rice and a mixture of water, ginger and either sugar or molasses. Other delectables include che kho dau xanh — a mung bean pudding made with coconut milk and sugar — and banh tet chuoi, a glutinous rice cake with bananas.

“On Lunar New Year, for three days you go visit family, friends and teachers,” said Linh Trinh, a Vietnamese food historian who is getting a PhD in the subject at the University of Michigan. “So everybody has to store a lot of snacks in their house for people to come visit and have tea. It becomes like the pride of the household to serve their traditional snacks.”

More U.S. companies are finding a sweet spot in incorporating Lunar New Year elements. Cupcake chain Sprinkles, in collaboration with the pan-Asian cultural support nonprofit Gold House, is selling red velvet cupcakes with an almond cookie crust and almond cream cheese frosting. At Disney California Adventure Park, guests can order milk tea cheesecake with taro mousse.

Judging by the 150,000-plus membership of the Subtle Asian Baking Facebook group, a lot of Asians are more about showing off something they made for the holiday rather than bought. The community has come a long way from when Lieu started it in 2020. For the third year, there has been a virtual Lunar New Year bake-off on Facebook and Instagram where members share photos of stunning macarons, chiffon cakes and other pastries.

“You’re innovating. You’re bringing appreciation to all these amazing ingredients,” Lieu said. “And then you’re you’re making it your own traditions, which is amazing.”

Kelson Herman, of San Francisco, crafted a sourdough boule with an illustration of Miffy, a girl bunny from a popular Dutch children’s book series, for the Lunar New Year. Already an avid baker, the 44-year-old got inspired by seeing online what other people were doing.

“I see a lot of boundaries being pushed, people trying to not just one-up each other but be more creative,” Herman said. “I feel like it always comes down to flavors that bring back kind of familial memories. … It could be things that just evoke conversation and family.”

In Queens, New York, Karen Chin made a two-tier cake frosted in coconut buttercream topped with a white chocolate rabbit. One layer was vanilla with red bean paste. The other was spiced cake with cardamom and mango curd. It’s a far cry from the fat goh her grandmother makes.

“I told my grandma that I was going to make a cake. And she’s like, ‘Don’t make it too complicated,'” Chin said, chuckling.

Yet, Chin’s creativity yielded some special family moments.

“I was so touched because last time when she came and she ate something, she’s like ‘You make good food.’ I was like, ‘Wow, that’s the first time she complimented me,'” Chin said.

Sue Ng, who was born and raised in Canada but now lives in Hong Kong, loves to “cute-ify” pastries for special occasions. During the pandemic, she found a passion for combining baking and her love of Asian pop culture. Past Lunar New Year creations included a rolled cake that looked like a White Rabbit Creamy Candy, a Chinese brand as iconic as the Hershey bar.

Ng said that because her two school-age daughters have grown up in Hong Kong, they’ve learned the importance of the Lunar New Year, including the food. But she also likes to throw in something different, such as black sesame financiers and salted egg yolk cookies.

“A Lunar New Year dessert to me is something made using Asian elements with reference to traditionally-made goods during this time,” Ng said in an email. “Now we can be creative and make something like nian gao-filled cookies and the ideas are limitless! Sweet treats are a must during this time because it symbolizes a sweet life.”

Source: Voice of America