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☆ The world's largest iceberg is now sailing away from Antarctica
▼ + stars: | 2023-12-04 | by ( Sean Conlon | ) www.cnbc.com time to read: 1 min

Share Share Article via Facebook Share Article via Twitter Share Article via LinkedIn Share Article via EmailThe world's largest iceberg is now sailing away from AntarcticaRecent satellite images show an iceberg roughly three times the size of New York City floating past the northern tip of the Antarctic Peninsula. According to the British Antarctic Survey, the berg named A23a is now likely to be swept along by the Antarctic Circumpolar Current into 'iceberg alley.' Once hosting a Soviet research station, A23a split from West Antarctica's Filchner-Ronne Ice Shelf in 1986.

Persons: berg, A23a, Antarctica's Organizations: British Antarctic Survey, Antarctic, Ronne Ice Shelf Locations: Antarctica, New York City, Soviet

☆ Opinion | What the Wealthiest and Most Powerful Nations Owe the Rest of the Warming World
▼ + stars: | 2023-12-04 | by ( Erle C. Ellis | ) www.nytimes.com time to read: +3 min

At the same time, those nations that have yet to enrich themselves on fossil fuels have every right to develop their economies as others have. It is possible that clean energy may soon outcompete fossil fuels. Passing the 1.5 degree mark is merely a symptom of the underlying condition: the continued burning of fossil fuels. The successful effort to save the ozone layer is a case in point. The ozone layer is expected to fully recover to pre-1980s levels within decades.

Locations: United States, Antarctica

LONDON (AP) — Britain's polar research ship has crossed paths with the largest iceberg in the world — a “lucky” encounter that enabled scientists to collect seawater samples around the colossal berg as it drifts out of Antarctic waters, the British Antarctic Survey said Monday. It began drifting in recent months, and has now moved into the Southern Ocean, helped by wind and ocean currents. Scientists say it is now likely to be swept along into “iceberg alley” — a common route for icebergs to float toward the sub-Antarctic island of South Georgia. What we don’t know is what difference particular icebergs, their scale, and their origins can make to that process," she said. The British Antarctic Survey said its findings will help improve understanding of how climate change is affecting the Southern Ocean and the organisms that live there.

Persons: Sir David Attenborough, London —, ”, Andrew Meijers, “, A23a hasn’t, berg, Laura Taylor Organizations: British Antarctic Survey Locations: Antarctica, New York City, London, Weddell, South Georgia, British

☆ COP28: What sea level rise will look like in the cities that have hosted global climate summits
▼ + stars: | 2023-12-03 | by ( Rachel Ramirez | ) edition.cnn.com time to read: +10 min

And scientists say the steady climb of global sea level will continue for many decades as temperatures crank higher. A photo illustration of the Burj Khalifa in Dubai, United Arab Emirates, if we sharply cut carbon pollution (1.5°C global warming). Climate Central A photo illustration of the Burj Khalifa in Dubai, United Arab Emirates, if we keep our current carbon path (3°C global warming). Climate Central Photo illustrations from Climate Central What sea-level rise could look like at the Burj Khalifa in Dubai, United Arab Emirates. A photograph of the Fortaleza del Real Felipe in Lima, Peru, if we sharply cut carbon pollution (1.5°C global warming).

Persons: Sabelle, ”, Benjamin Strauss, ” Strauss, Chhatrapati Shivaji Maharaj Vastu, Shivaji Maharaj Vastu Organizations: CNN, Climate Central, UN, United Arab Emirates, Fortaleza del Real Felipe, Climate, Durban City Hall, U.S . Navy, NGA, World Meteorological Organization Locations: Dubai, Burj Khalifa, United Arab Emirates, United Arab, Fortaleza, Lima , Peru, Earth’s, Climate Central, COP21, Paris, Durban, South Africa, Mumbai, India, Chhatrapati, Antarctica, Copenhagen, Denmark, Christiansborg, COP28

☆ The Startling Economics of the World’s Largest Cruise Ship
▼ + stars: | 2023-12-01 | by ( Spencer Jakab | ) www.wsj.com time to read: 1 min

It has been nearly half a century since The Love Boat promised “something for everyone.” These days, it’s actually true. Before the hit TV show helped popularize them, cruises were derided as being for the “newly wed and nearly dead,” and were a lot more expensive than they are today. Those not quite rich enough for their own yacht can still splurge on intimate, luxurious trips or high-octane adventures to places like Antarctica. But most cruisers these days are middle-class Americans or Europeans looking to be fed, pampered and entertained on a floating version of home. The hyper-efficient industry has made that possible by building megaships that resemble floating theme parks, and even its own islands.

Persons: it’s Locations: Antarctica

☆ Chinstrap penguins survive on more than 10,000 naps a day, study finds
▼ + stars: | 2023-12-01 | by ( Amarachi Orie | ) edition.cnn.com time to read: +7 min

CNN —The art of nodding off appears to have been mastered by breeding chinstrap penguins, who take more than 10,000 naps a day, with each nap lasting an average of four seconds, according to a new study. They observed that the penguins in the colony engaged in more than 600 bouts of microsleep an hour. A 1986 study found captive, nonbreeding emperor penguins to have fragmented sleep called “drowsiness,” which also resembles the microsleep pattern of the breeding chinstrap penguins. He added that through these short bursts of sleep the penguins could “sleep and remain vigilant” while incubating. “I think that’s why it’s important to study sleep.

Persons: King George Island, ecophysiologist Paul, Antoine Libourel, ” Libourel, Federico Anfitti, Libourel, “, they’d, ”, Christian Harding, Vladyslav Organizations: CNN, Neuroscience Research, of Lyon, University of California, University of Oxford Locations: France, South Korea, Germany, Antarctica, “, microsleeps, San Diego

WASHINGTON (AP) — It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered. Chinstrap penguins in Antarctica need to guard their eggs and chicks around-the-clock in crowded, noisy colonies. These short “microsleeps,” totaling around 11 hours per day, appear to be enough to keep the parents going for weeks. “For these penguins, microsleeps have some restorative functions — if not, they could not endure,” he said.

Persons: —, ”, Niels Rattenborg, Max Planck, “, King, King George Island, Won Young Lee, Paul, Antoine Libourel, Daniel Paranhos Zitterbart Organizations: WASHINGTON, Max, Max Planck Institute for Biological Intelligence, Korean Polar Research, Neuroscience Research, of Lyon, “ Penguins, Oceanographic, Associated Press Health, Science Department, Howard Hughes Medical Institute’s Science, Educational Media Group, AP Locations: Germany, King George, Antarctica, France, Massachusetts

WHAT'S HAPPENED SINCE THE LAST ONEThe world has gotten hotter since last year’s conference in Egypt. Burning fossil fuels that sends carbon into the atmosphere remains the main cause of global warming, and production continues to grow. Climate campaigners say efforts to develop wind, solar and other alternative energies are not going fast enough. Global warming has vast implications: It can upend local economies, worsen weather patterns, drive people to migrate, and cause havoc for Indigenous peoples who want to retain their traditional cultures, among many other impacts. Many want to know if oil-rich Gulf states will pony up more money to help developing countries adapt to climate change and switch to greener technologies.

Persons: ”, Petteri Taalas, Daniel, Hurricane Otis pummeled, King Charles, Narendra Modi, John Kerry, Olaf Scholz, Pope Francis, Sultan al, Jaber, Antonio Guterres Organizations: United Arab Emirates, Hamas, United, 28th “ Conference, Hurricane Otis, Indian, Cargill, AP Locations: DUBAI, United Arab, Israel, Dubai, United Arab Emirates, COP28, WHAT'S, Egypt, Brazil, India, Libya, Hurricane Otis pummeled Mexico, Europe, Paris, Abu Dhabi, Tokyo, Tegucigalpa, Timbuktu, Ukraine, Gaza, Antarctica, Argentina, Uruguay, ___

☆ Extreme sleep behavior documented in cute Antarctic chinstrap penguins
▼ + stars: | 2023-11-30 | by ( Will Dunham | ) www.reuters.com time to read: +4 min

Guarding their nests is serious business for these medium-sized penguins, with predatory seabirds called brown skuas on the prowl. But this species, scientists said on Thursday, has devised an ingenious way of getting sufficient sleep without compromising vigilance. The researchers documented extreme sleep behavior in these flightless birds. "Penguins do not display any obvious negative consequence of sleep fragmentation," Libourel said. During incubation, skuas prey on penguin eggs, particularly on a colony's periphery.

Persons: chinstraps, ecophysiologist Paul, Antoine Libourel, Won Young Lee, George Island, Libourel, Lee, Will Dunham, Rosalba O'Brien Organizations: Lyon Neuroscience Research, Korea Polar Research, GPS, Penguins, Thomson Locations: Lyon, France, Korea, Incheon, Washington

☆ The woman who travels around the US in an Airstream with her husband and a goat
▼ + stars: | 2023-11-29 | by ( Tamara Hardingham-Gill | ) edition.cnn.com time to read: +10 min

“We didn’t know how well she was going to do with traveling,” Cate tells CNN Travel. Kid on boardPet goat Frankie spends several months of the year traveling around the US in and Airstream with her owners Cate and Chad Battles. “We’ve been all over the country and we’ll pass someone on a trail and they’ll be like, ‘Is that Frankie?’” Cate recalls. “So it’s really, really funny.”She particularly enjoyed getting the chance to speak with other goat owners to “talk goats,” while appearing on the program. And it ended up working really, really great.

Persons: Frankie, Cate Battles, Chad, who’ve, ” Cate, they’ve, Cate, ”, “ I’ve, she’d, “, they’d, they’d “, Woody Guthrie, Maggie, it’s, they’ll, that’s, “ We’ve, ’ ” Cate, ” Airstream, I’ll, they’re, We’re, haven’t, They’ve Organizations: CNN, CNN Travel, Chad Battles, Argosy, ”, Discovery Locations: United States, Midwest , Montana , Wyoming, Idaho, Antarctica, Tennessee, Asheville , North Carolina, Chad, Southern Oregon, Western North Carolina, Pacific Northwest, Oregon, Utah, California , Nevada , Arizona, New Mexico, Oklahoma, North Carolina , Kentucky , Ohio , Indiana , Illinois , Iowa, South Dakota, Wyoming, Canada, Arizona, Southern California, Baja , Mexico, Airstream

☆ Stunning video shows Antarctic killer whales appearing to use icebergs as scratching posts, possibly to exfoliate their skin
▼ + stars: | 2023-11-29 | by ( Grace Eliza Goodwin | Kelsey Vlamis | ) www.businessinsider.com time to read: +4 min

National Geographic said it captured the first footage of killer whales rubbing up against an iceberg. AdvertisementOrcas living in the freezing waters of Antarctica have been captured in footage rubbing up against icebergs in what could be an innovative skincare technique. AdvertisementLike humans, whales and dolphins typically shed their skin continuously, and most of them have no problem doing this in warmer waters. The study found that some antarctic killer whales make an essentially nonstop, nearly 7,000-mile migration to warmer waters that takes six to eight weeks. While the reasons whales migrate remain a mystery, the study argued the evidence suggests "deferred skin molt could be the main driver of long-distance migration for antarctic killer whales."

Persons: —, Robert Pitman, Pitman, Andrew Trites Organizations: Service, National Geographic, Newsweek, Mammal, Oregon State, Mammal Institute, Pacific Northwest, Northern, Marine Mammal Research, University of British Locations: Antarctica, molting, Pacific, British Colombia, Canada, University of British Columbia

☆ Fact Check: Clip shows Israel nuclear facility, not town in Antarctica
▼ + stars: | 2023-11-28 | by ( Reuters Fact Check | ) www.reuters.com time to read: +1 min

A clip shows a photograph of a nuclear facility in Israel digitally altered to appear like it is inside a crater, not a newly discovered town in Antarctica, despite a clip circulating online. The video shows a satellite image of a town inside a crater, with text printed across the clip that reads: “Antarctica was scramble free on Google earth Sunday ANTARCTICA UNBLURRED.”Further text reads: “Frequency Fence a.k.a. Geo Fence was down Sunday giving Google Earth enthusiasts a rare crystal clear view of ANTARCTICA. The buildings in the clip circulating online (L) match Google Earth Pro satellite captured in 2011 (R). The clip shows a research facility in Israel, not a newly discovered town in Antarctica.

Persons: Read Organizations: Google, Negev Nuclear Research, Pro, Reuters, Thomson Locations: Israel, Antarctica, ANTARCTICA, China

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Locations: Canada, Antarctica

☆ The world's biggest iceberg is on the move after 37 years, and it could threaten wildlife
▼ + stars: | 2023-11-24 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +3 min

A23a, the world's biggest iceberg, is on the move 37 years after it broke off from Antarctica. Scientists will keep a close eye on it as it could threaten wildlife near South Georgia Island. AdvertisementThe world's biggest iceberg, covering about 1,500 square miles, is on the move. NASA WorldviewA23a lost its title of world's biggest iceberg in May 2021, but jumped ahead once again in October 2022, when the previous record-holder, A76, broke into three pieces, per the Guinness World Records website. A gentoo penguin with a newborn chick South Georgia.

Persons: —, A23a, Andrew Fleming Organizations: Ocean, Service, BBC, British Antarctic Survey, NASA, Records, Getty Locations: Antarctica, South Georgia, Weddell, Soviet, Georgia

[1/2] A satellite imagery of the world's largest iceberg, named A23a, seen in Antarctica, November 15, 2023. Courtesy of European Union/Copernicus Sentinel-3/Handout via REUTERS Acquire Licensing RightsNov 24 - The world's largest iceberg is on the move for the first time in more than three decades, scientists said on Friday. At almost 4,000 square km (1,500 square miles), the Antarctic iceberg called A23a is roughly three times the size of New York City. This will funnel it toward the Southern Ocean on a path known as "iceberg alley" where others of its kind can be found bobbing in dark waters. "Over time it's probably just thinned slightly and got that little bit of extra buoyancy that's allowed it to lift off the ocean floor and get pushed by ocean currents," said Marsh.

Persons: berg, Oliver Marsh, it's, Gloria Dickie, Olga Vyshnevska, William Maclean Organizations: European, Copernicus, REUTERS Acquire, Antarctica's, Ronne Ice Shelf, British Antarctic Survey, Antarctic, Thomson Locations: Antarctica, New York City, Soviet, Weddell, A23a, South Georgia, South Africa, London

☆ World’s biggest iceberg is on the move
▼ + stars: | 2023-11-24 | by ( Amy Woodyatt | ) edition.cnn.com time to read: +1 min

London CNN —The world’s biggest iceberg – more than twice the size of Britain’s capital city - is on the move after decades of being grounded on the seafloor in Antarctica. The huge mass of ice broke away from the Filchner-Ronne ice shelf in 1986, calved and grounded on the Antarctic’s Weddell Sea floor almost immediately. The iceberg, named A23a, is about 400 meters (1,312 feet) thick, and almost 4,000 square kilometers (1,544 square miles) in area. Greater London, by way of comparison, is 1,572 square kilometers (607 square miles). The iceberg, carried by ocean currents, will likely head eastward, and at its current rate is traveling five kilometers (three miles) a day.

Persons: Ella Gilbert, Oliver Marsh, A23a, Gilbert, Marsh Organizations: London CNN, Ronne, British Antarctic Survey, CNN Locations: Antarctica, Weddell, Greater London

☆ Environmental Photographer of the Year 2023: Images of flood, drought and plastic pollution
▼ + stars: | 2023-11-23 | by ( Nell Lewis | ) edition.cnn.com time to read: +4 min

All three scenes were among the winning images of the Environmental Photographer of the Year 2023 competition, and all three were taken in Bangladesh. The country is one of the most vulnerable to climate change in the world, ranking seventh on the latest Global Climate Risk Index, based on data from 2000 to 2019. It’s prone to cyclones, tornadoes and floods, and it is estimated that by 2050, one in every seven people in Bangladesh will be displaced by climate change. He adds that this year’s competition saw entries from other regions also severely threatened by climate change, such as India, West Bengal, Antarctica and Argentina. With the image, he wants to communicate the impact of plastic pollution and hopes that when people see it, they might realize the consequence of throwing away plastic and change their behavior.

Persons: It’s, Hossain, ”, Solayman Hossain, Sam Sutaria, Apu, Sutaria Organizations: CNN, Chartered Institution of Water, Environmental Management, Nikon Locations: floodwater, Bangladesh, Rivers, Kushtia, India, West Bengal, Antarctica, Argentina, Dhaka

☆ 9 passenger airliners that have landed on Antarctica's rugged runways made out of blue ice
▼ + stars: | 2023-11-22 | by ( Taylor Rains | ) www.businessinsider.com time to read: +7 min

These planes land on rugged, unpaved runways mostly made of blue ice and compacted snow. PrivatAir's Boeing 737 and Smartwings' Boeing 737 MAXA Smartwings 737 MAX on Antarctica in January 2022. It was the first time the jet type landed on one of the continent's blue ice runways. Another Loftleider 757 is set to ferry Antarctic Ice Marathon runners to Union Glacier this December. Loftleider Icelandic Airlines' and Titan Airways Boeing 767Titan Airways' Boeing 767 on Antarctica.

Persons: —, George Hubert Wilkins, Glenn Jacobson, PrivatAir, NPI, Tim Hewette, Troll, Fang, Patrick Woodhead Organizations: Atlantic Airways, Boeing, Service, Lockheed Vega, Airbus, Australian Antarctic, Australian, Skytraders, Australian Antarctic Program, McMurdo, AAP, Norwegian Polar Institute, Swiss, NPI, Boeing's, Airlines, Titan Airways, Antarctic Logistics, Expeditions, Antarctic Logistics & Expeditions, Antarctic Ice, Russian Antarctic, Titan Airways Boeing, Norse Atlantic Airways, Emirates, White Desert Locations: Antarctica, Skytraders, Christchurch , New Zealand, Hobart, Australia's, Tasmania, Cape Town , South Africa, Czech, Chile, Russian, NPI, Norway, Cape Town, Russia's

☆ Fact Check: Map featuring Antarctica ‘ice wall’ is an art forum creation
▼ + stars: | 2023-11-22 | by ( Reuters Fact Check | ) www.reuters.com time to read: +2 min

A video of a map depicting Earth’s continents surrounded by an Antarctic “ice wall” is a creative interpretation from an online art forum. The image shows a map of Earth where the planet’s continents are labelled but structured differently, centered in the middle of a flat Earth, with Antarctica forming an ice ring around them. The map depicts unknown lands sandwiched between the first ice wall and a second, further ice wall. Reuters has previously addressed false claims that misinterpret maps to further the flat Earth conspiracy theory. It is not evidence of a flat Earth.

Persons: “ worldbuilding, Read Organizations: Antarctic, Facebook, YouTube, NASA, Reuters, Thomson Locations: Antarctica

☆ Scientists said the ozone hole was recovering. That good news was premature, one study claims
▼ + stars: | 2023-11-21 | by ( Angela Dewan | ) edition.cnn.com time to read: +4 min

But in a new study published Tuesday, some scientists claim it may not be recovering at all, and that the hole may even be expanding. In a paper, published by Nature Communications, they found that ozone levels have reduced by 26% since 2004 at the core of the hole in the Antarctic springtime. They used historical data to compare that behavior and changing ozone levels, and to measure signs of ozone recovery. “Altogether, our findings reveal the recent, large ozone holes may not be caused just by CFCs,” Kessenich said. “Those events have been shown to have strongly decreased the ozone hole size,” he said, “so including those events would probably have nullified any long-term negative trend.”

Persons: ”, Hannah Kessenich, didn’t, ” Kessenich, —, Martin Jucker Organizations: CNN, Nature Communications, University of Otago, University of New, Science Media Center Locations: UN, Montreal, New Zealand, El, Southern, University of New South Wales, Australia

☆ UN Chief, Chile's Boric to Visit Antarctica Before COP28 Climate Summit
▼ + stars: | 2023-11-20 | by ( Nov. | At P.M. | ) www.usnews.com time to read: +2 min

SANTIAGO (Reuters) - United Nations Secretary General Antonio Guterres will travel to Antarctica this week with Chilean President Gabriel Boric to observe the impact of rising temperatures caused by climate change on the continent, he said on Monday. "Scorching temperatures mean Antarctic ice is melting ever-faster, with deadly consequences for people around the world," Guterres told reporters. Guterres and Boric will be in Antarctica from Wednesday to Saturday, subject to weather conditions, the U.N. communications office in Chile said. Boric traveled to Antarctica previously this year, and has invited other leaders such as Chinese President Xi Jinping to do the same. (Reporting by Natalia Ramos in Santiago; Additional reporting by Michelle Nichols at the United Nations; Writing by Kylie Madry; editing by Grant McCool)

Persons: General Antonio Guterres, Gabriel Boric, Guterres, Collins, Nelson, Stephane Dujarric, Boric, Xi Jinping, Natalia Ramos, Michelle Nichols, Kylie Madry, Grant McCool Organizations: United Nations, Chilean Air Force Locations: SANTIAGO, Antarctica, Chile, Dubai, Paris, Santiago

Walsh died Nov. 12 at his home in Myrtle Point, Oregon, his daughter, Elizabeth Walsh, said Monday. “I knew we were making history,” Walsh told The World newspaper of Coos Bay, Oregon, in 2010. “There was an opportunity to pioneer,” Walsh told The World. It wasn’t until later they told us what they had in store.”Walsh was born Nov. 2, 1931, in Berkeley, California. Walsh traveled the world, including many trips to Antarctica, where the Walsh Spur pointed rock is named in his honor.

Persons: Don Walsh, Mariana Trench —, Walsh, Elizabeth Walsh, Jacques Piccard, Mariana Trench, “, ” Walsh, ” Piccard, Piccard, “ Walsh, Kurt Rothenhaus, Kelly, Don’t, ”, “ He’s, Kelly Walsh, Victor Vescovo, ” Vescovo, Don Walsh’s, Joan, ___ Thiessen Organizations: U.S . Navy, Navy, U.S . Naval Academy, University of Southern, Public, U.S . State Department, Naval, Dallas, Twitter Locations: Myrtle Point , Oregon, U.S, Swiss, Trieste, Guam, Pacific, Coos Bay , Oregon, San Diego, Berkeley , California, Texas, University of Southern California, Antarctica, Kelly, Anchorage , Alaska

Canada Goose parkas, which can cost upwards of $1,900, are sported by Oscar winners, Olympians and Arctic explorers. "When you buy a Canada Goose jacket, you're buying a piece of Canada. Here's how Canada Goose began, grew to billion-dollar status and plans to survive consumer uncertainty. Canada Goose jackets, with their iconic shoulder patches, are such a status symbol that people who wear them are sometimes the target of robberies. "We realized that we could make jackets that are just as good without fur as with fur," Reiss says.

Persons: Dani Reiss, Oscar, Reiss, Goose, Sam Tick, Bean, Eddie Bauer, Reiss's, David Reiss, Canada Goose Organizations: Canada, CNBC, Metro Sportswear Ltd, Antarctica's, Lacoste, University of Toronto, Conservation Alliance, Bain Capital, New York Stock Exchange, People, Animals Locations: Wells, Canada, Poland, Snow, Europe, Asia, paychecks, Toronto, New York

☆ Greenland’s northern glaciers are in trouble, threatening ‘dramatic’ sea level rise, study shows
▼ + stars: | 2023-11-07 | by ( Manav Tanneeru | Laura Paddison | ) edition.cnn.com time to read: +6 min

CNN —At the top of the world, northern Greenland’s huge glaciers — long thought to be relatively stable — are in trouble, a new study shows. As the ocean warms, Greenland’s last remaining ice shelves are rapidly weakening, destabilizing the nearby glaciers and threatening potentially “dramatic” consequences for sea level rise, according to the study published Tuesday in Nature Communications. When they melt and weaken, more of the land-based ice is able to slide into the ocean, adding to sea level rise. Since 1978, the ice shelves supporting northern Greenland’s glaciers have lost more than 35% of their total volume, according to the study. After the collapse of the Zachariæ Isstrøm glacier’s ice shelf in 2003, the ice discharge into the ocean doubled, according to the study.

Persons: Greenland’s, ” Romain Millan, “, Millan, ” Millan, Copernicus, Thomas Traasdahl, Ritzau Scanpix, Sophie Nowicki, Nowicki, ” Organizations: CNN, Nature Communications, Grenoble Alpes University, Copernicus Sentinel, ESA, Getty, University at Buffalo Locations: Greenland, France, ”, AFP, Antarctica

☆ Seals with funny hats discovered a hidden canyon over a mile deep under Antarctica and scientists want to honor the animals by naming it after them
▼ + stars: | 2023-11-07 | by ( Maiya Focht | ) www.businessinsider.com time to read: +4 min

Scientists put trackers on Antarctic seals to help them map the ocean floor. The deep-diving seals revealed a massive underwater canyon over a mile deep. This canyon may help scientists predict how the Antarctic ice sheet will react to climate change. Joseph MarlowUnderstanding ocean geography helps scientists predict how Antarctica's ice sheet has reacted to global climate change in the past. Antarctic seals, like the 50 Weddell seals and 215 southern elephant seals they tagged, regularly travel to great depths of the ocean.

Persons: Clive McMahon, aren't, they're, Joseph Marlow, Fausto Ferraccioli Organizations: Service, Sydney Institute of Marine Science, East, NBC, Australian Center for Excellence, Aquatic, Seals, Australian Antarctic Program Locations: Vincennes Bay, Antarctica

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