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Japan’s Emperor and His Family Mourn Nagasaki Atomic Bomb Victims, Marking 80 Years Since Tragedy 

Japanese Emperor Naruhito, center left, Empress Masako center right, and Princess Aiko, right, listen to Nagasaki Mayor Shiro Suzuki, left, as they visit the cenotaph for the atomic bombing victims at the peace park in Nagasaki. western Japan, Friday, Sept. 12, 2025. (Kyodo News via AP)
Japanese Emperor Naruhito, center left, Empress Masako center right, and Princess Aiko, right, listen to Nagasaki Mayor Shiro Suzuki, left, as they visit the cenotaph for the atomic bombing victims at the peace park in Nagasaki. western Japan, Friday, Sept. 12, 2025. (Kyodo News via AP)
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Japan’s Emperor and His Family Mourn Nagasaki Atomic Bomb Victims, Marking 80 Years Since Tragedy 

Japanese Emperor Naruhito, center left, Empress Masako center right, and Princess Aiko, right, listen to Nagasaki Mayor Shiro Suzuki, left, as they visit the cenotaph for the atomic bombing victims at the peace park in Nagasaki. western Japan, Friday, Sept. 12, 2025. (Kyodo News via AP)
Japanese Emperor Naruhito, center left, Empress Masako center right, and Princess Aiko, right, listen to Nagasaki Mayor Shiro Suzuki, left, as they visit the cenotaph for the atomic bombing victims at the peace park in Nagasaki. western Japan, Friday, Sept. 12, 2025. (Kyodo News via AP)

Japanese Emperor Naruhito, accompanied by his wife and daughter, paid their respects Friday to atomic bombing victims in Nagasaki as he wrapped up a tour of some of the worst-hit places in World War II and Japan marked the 80th anniversary of the bombing.

Naruhito, his wife, Empress Masako, and their daughter, Princess Aiko, bowed deeply and offered bouquets of white flowers at the cenotaph for atomic bombing victims at the ground-zero site in the peace memorial park in Nagasaki.

The United States dropped a plutonium bomb on the southwestern city of Nagasaki at 11:02 a.m. on Aug. 9, 1945, killing more than 70,000 people by the end of that year. The attack came only three days after the US dropped a uranium bomb on Hiroshima, destroying the city and killing 140,000 others. Japan announced its surrender on Aug. 15, ending World War II and the country's nearly half-century of aggression in Asia.

Naruhito has repeatedly stressed the importance to remember and keep telling the tragedy of war to younger generations.

Marking the 80th anniversary of the end of WWII, Naruhito has visited places this year where some of the bloodiest battles and bombings occurred, including Iwo Jima, Okinawa and Hiroshima.

In July, Naruhito and Masako honored thousands of Japanese prisoners of World War II who were held under harsh conditions in Mongolia during their trip to that country. It’s part of his effort of atonement and remembrance of the tragedy of war fought in the name of his grandfather, Emperor Hirohito.

The royal couple and the princess were to visit the Nagasaki Atomic Bomb Museum to observe exhibits and meet with atomic bomb survivors. On Saturday, the Naruhito family plans to visit a nursing home for the atomic bomb survivors to meet more of them.

With their average age now exceeding 86, many survivors have expressed frustration over the growing nuclear threat in recent years despite their decades-long grassroots campaign to abolish nuclear weapons.

The visit to Nagasaki, Naruhito's first since ascending the Chrysanthemum Throne, and the first ever for Aiko, wraps up their tour of prayers and consolation this year. Hundreds of people holding small rising-sun flags waved and called their names as the royal motorcade headed to the peace park, while the Imperial couple and Aiko lowered their windows and waved to the cheering crowd on the roadside.

In the evening, thousands of Nagasaki residents were to welcome the Imperial couple and Aiko by holding up lanterns on a building rooftop visible from the royal family's hotel.

In April, the couple visited Iwo Jima to pay tribute to about 20,000 Japanese and nearly 7,000 US Marines killed in the Battle of Iwo Jima, fought from Feb. 19 to March 26, 1945.

In June, Naruhito visited Okinawa to mourn about 188,000 Japanese, half of them Okinawan civilians, and about 12,000 Americans, killed in the Battle of Okinawa. Aiko accompanied her parents, underscoring Naruhito’s wish that she would learn the hardships of the Okinawan people and share their stories with younger generations.

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Sharks Are Famous for Fearsome Teeth, but Ocean Acidification Could Make them Weaker

In this undated handout photo provided by Heinrich Heine University Duesseldorf in January 2026, a blacktip reef shark swims at Sealife Oberhausen in Oberhausen, Germany. (Maximilian Baum/Heinrich Heine University Duesseldorf via AP)
In this undated handout photo provided by Heinrich Heine University Duesseldorf in January 2026, a blacktip reef shark swims at Sealife Oberhausen in Oberhausen, Germany. (Maximilian Baum/Heinrich Heine University Duesseldorf via AP)
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Sharks Are Famous for Fearsome Teeth, but Ocean Acidification Could Make them Weaker

In this undated handout photo provided by Heinrich Heine University Duesseldorf in January 2026, a blacktip reef shark swims at Sealife Oberhausen in Oberhausen, Germany. (Maximilian Baum/Heinrich Heine University Duesseldorf via AP)
In this undated handout photo provided by Heinrich Heine University Duesseldorf in January 2026, a blacktip reef shark swims at Sealife Oberhausen in Oberhausen, Germany. (Maximilian Baum/Heinrich Heine University Duesseldorf via AP)

Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those weapons at risk.

That is the takeaway from a study performed by a group of German scientists who tested the effects of a more acidic ocean on sharks' teeth. Scientists have linked human activities including the burning of coal, oil and gas to the ongoing acidification of the ocean, The Associated Press reported.

As oceans become increasingly acidic, sharks' teeth could become structurally weaker and more likely to break, the scientists found. That could change the big fishes' status at the top of the ocean's food chain, they wrote.

The ocean will not become populated with toothless sharks overnight, said the study's lead author, Maximilian Baum, a marine biologist at Heinrich Heine University Düsseldorf. But the possibility of weaker teeth is a new hazard to sharks that already face pollution, overfishing, climate change and other threats, Baum said.

“We found there is a corrosion effect on sharks' teeth,” Baum said. “Their whole ecological success in the ocean as the rulers of other populations could be in danger.”

The researchers, who published their work in the journal Frontiers in Marine Science, performed their study as ocean acidification has become an increasing focus of conservation scientists.

Acidification occurs when oceans absorb more carbon dioxide from the air, the National Oceanic and Atmospheric Administration has said. The ocean is expected to become almost 10 times more acidic than it currently is by the year 2300, the German scientists wrote.

The scientists performed their study by collecting more than 600 discarded teeth from an aquarium that houses blacktip reef sharks, a species of shark that lives in the Pacific and Indian oceans and typically grows to about 5.5 feet (1.7 meters) long. They then exposed the teeth to water with the acidity of today and the projected acidity of 2300.

The teeth exposed to the more acidic water became much more damaged, with cracks and holes, root corrosion and degradation to the structure of the tooth itself, the scientists wrote.

The results “show that ocean acidification will have significant effects on the morphological properties of teeth,” the scientists wrote.

Still the ocean's top predator Shark teeth are “highly developed weapons built for cutting flesh, not resisting ocean acid,” Baum said. Sharks will go through thousands of teeth in a lifetime, and the teeth are critical for allowing sharks to regulate populations of fish and marine mammals in the oceans.

Many sharks are also facing extinction jeopardy, as more than a third of shark species are currently threatened with extinction according to the International Union for Conservation of Nature. Thankfully, sharks have a number of factors that can help them stave off the negative effects of ocean acidification, said Nick Whitney, senior scientist at the Anderson Cabot Center for Ocean Life at the New England Aquarium.

Whitney, who was not involved in the study, said the scientists' work on the shark teeth was sound. However, because shark teeth develop inside the mouth tissue of sharks, they will be shielded from changes in ocean chemistry for a time, he said.

And history has taught us that sharks are survivors, Whitney said.

“They've been around for 400 million years and have evolved and adapted to all kinds of changing conditions,” he said.

Ocean acidification could be a concern, but overfishing remains the biggest threat to sharks, said Gavin Naylor, director of the Florida Program for Shark Research at the Florida Museum of Natural History.

Acidification will bring many changes Naylor and others cautioned that ocean acidification is indeed going to pose many threats to the ocean beyond just sharks. Ocean acidification is expected to be especially harmful to shellfish such as oysters and clams because it will make it more difficult for them to build shells, NOAA has said.

It could also make fish scales weaker and more brittle. It's tough to say now whether that could ultimately benefit the sharks that feed on them, Naylor said.

For now, ocean acidification can't be disregarded as a threat facing sharks, Baum said. Some shark species could come close to extinction in the coming years and ocean acidification could be one of the factors causing that to happen, he said.

“The evolutionary success of sharks is dependent on their perfectly developed teeth,” Baum said.

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Mummified Cheetahs Found in Saudi Caves Shed Light on Lost Populations

This undated image provided by Communications Earth and Environment shows the mummified remains of a cheetah. (Ahmed Boug/Communications Earth and Environment via AP)
This undated image provided by Communications Earth and Environment shows the mummified remains of a cheetah. (Ahmed Boug/Communications Earth and Environment via AP)
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Mummified Cheetahs Found in Saudi Caves Shed Light on Lost Populations

This undated image provided by Communications Earth and Environment shows the mummified remains of a cheetah. (Ahmed Boug/Communications Earth and Environment via AP)
This undated image provided by Communications Earth and Environment shows the mummified remains of a cheetah. (Ahmed Boug/Communications Earth and Environment via AP)

Scientists have uncovered the mummified remains of cheetahs from caves in northern Saudi Arabia.

The remains range from 130 years old to over 1,800 years old. Researchers excavated seven mummies along with the bones of 54 other cheetahs from a site near the city of Arar.

Mummification prevents decay by preserving dead bodies. Egypt's mummies are the most well-known, but the process can also happen naturally in places like glacier ice, desert sands and bog sludge.

The new large cat mummies have cloudy eyes and shriveled limbs, resembling dried-out husks.

“It’s something that I’ve never seen before,” said Joan Madurell-Malapeira with the University of Florence in Italy, who was not involved with the discovery.

Researchers aren’t sure how exactly these new cats got mummified, but the caves’ dry conditions and stable temperature could have played a role, according to the new study published Thursday in the journal Communications Earth and Environment.

They also don't know why so many cheetahs were in the caves. It could have been a denning site where mothers birthed and raised their young.

Scientists have uncovered the rare mummified remains of other large cats, including a saber-toothed cat cub in Russia.

It's uncommon for large mammals to be preserved to this degree. Besides being in the right environment, the carcasses also have to avoid becoming a snack for hungry scavengers like birds and hyenas.

Cheetahs once roamed across most of Africa and parts of Asia, but now live in just 9% of their previous range and haven't been spotted across the Arabian Peninsula for decades. That’s likely due to habitat loss, unregulated hunting and lack of prey, among other factors.

In a first for naturally mummified large cats, scientists were also able to peek at the cheetahs' genes and found that the remains were most similar to modern-day cheetahs from Asia and northwest Africa. That information could help with future efforts to reintroduce the cats to places they no longer live.

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Vonn Launches Social Media Search Mission After Ski Pole Goes Missing

US' Lindsey Vonn crosses the finish line to win the Women's Downhill event of the FIS Alpine Ski World Cup in Altenmarkt Zauchensee, Austria, on January 10, 2026. (AFP)
US' Lindsey Vonn crosses the finish line to win the Women's Downhill event of the FIS Alpine Ski World Cup in Altenmarkt Zauchensee, Austria, on January 10, 2026. (AFP)
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Vonn Launches Social Media Search Mission After Ski Pole Goes Missing

US' Lindsey Vonn crosses the finish line to win the Women's Downhill event of the FIS Alpine Ski World Cup in Altenmarkt Zauchensee, Austria, on January 10, 2026. (AFP)
US' Lindsey Vonn crosses the finish line to win the Women's Downhill event of the FIS Alpine Ski World Cup in Altenmarkt Zauchensee, Austria, on January 10, 2026. (AFP)

Lindsey Vonn may be dominating World Cup downhills at 41, but even the US speed queen is not immune to missing equipment.

Vonn took to social media on Thursday with an unusual plea after losing a ski pole in Tarvisio, Italy, ahead of this weekend's World Cup event.

"Someone took ‌my pole ‌in the parking ‌lot ⁠today in ‌Tarvisio. If you have seen it, please respond to this. Thank you," Vonn wrote on X, posting a photo of the matching pole complete with her initials on the ⁠hand strap.

Vonn, a favorite for the speed events ‌at next month's Milano-Cortina ‍Olympics, retired ‍from the sport in 2019 and ‍had a partial knee replacement in April 2024 but returned to competition later that year and has been enjoying a fairy-tale comeback that has defied age and expectation.

Already the oldest ⁠World Cup winner of all time, Vonn continued her astonishing, age-defying form with a downhill victory in Zauchensee, Austria last week.

That triumph marked Vonn's fourth podium from four downhills this season, cementing her lead in the World Cup standings and her status as the woman to ‌beat at next month's Olympics.