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CNN —Erosion has carved huge arches and cavernous hollows into the world’s largest iceberg as it floats through the ocean away from Antarctica, spectacular new photos show. The A23a iceberg is being gradually eroded as it moves further north of Antarctica and encounters milder air and warmer ocean temperatures. A23a is currently the largest iceberg in the world. Richard Sidey/Eyos ExpeditionsThe iceberg is about 400 meters (1,312 feet) thick, and almost 4,000 square kilometers (1,544 square miles) in area. Last February, Antarctic sea ice reached its lowest extent since records began, at 691,000 square miles.
Persons: A23a, Ian Strachan, Richard Sidey, Amy Woodyatt Organizations: CNN, EYOS Expeditions, EYOS, Ronne, Eyos Locations: Antarctica, London, Weddell, Los Angeles
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
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
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
[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
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
This year's Wildlife Photographer of the Year Grand Title went to a picture of a very strange crab. AdvertisementAdvertisementAn image of a rare golden horseshoe crab gliding close to the sea floor has won Laurent Ballesta the grand prize at the Wildlife Photographer of the Year award. Wildlife Photographer of the Year, developed and produced by the Natural History Museum in London, selected the winning picture from about 50,000 entries. VISHNU GOPAL / Wildlife Photographer of the YearPhotographer Vishnu Gopal followed characteristic footsteps at his campsite into the Brazilian rainforest. Mike Korostelev / Wildlife Photographer of the YearMike Korostelev spent two years visiting Kosi Bay, South Africa, to ingratiate himself with the local hippopotamuses.
Persons: Laurent Ballesta, , Kathy Moran, Vishnu Gopal, GOPAL, Mike Korostelev, ingratiate, Juan Jésus Gonzales Ahurrada, Juan Jésus Gonzales, didn't, Bertie Gregory, Weddell, Karine Aigner, Karine Organizations: Service, Wildlife, West Texas Locations: London, Pangatalan, Philippines, Bay, South Africa, USA
National Geographic captured humpback whales interrupting orcas that were hunting a seal in Antarctica. But then, Gregory said in the video, two humpback whales appeared out of nowhere. AdvertisementAdvertisementWhile killer whales do not pose a direct threat to adult humpback whales, which are much larger than orcas, killer whales do prey on humpback whale calves. While most people believe the humpbacks are swimming over to save the seal, the seal may actually be swimming toward the humpbacks to save itself. Sea lions and seals have been captured hopping onto boats in order to evade killer whales.
Persons: Bertie Gregory, Gregory, Leigh Hickmott, Andrew Trites, Trites, Robert Pitman, Pitman Organizations: Geographic, Service, University of St, Marine Mammal Research, University of British, Biologists, US, Oceanic, Atmospheric Administration, Hakai Magazine Locations: Antarctica, Wall, Silicon, Andrews, Scotland, University of British Columbia, Canada, British Columbia
The future of medicine may lie in space
  + stars: | 2023-06-17 | by ( Katie Hunt | ) edition.cnn.com   time to read: +6 min
Days after I got my first taste of working at a lab bench, a company set forth to prove scientific research can be successfully done in orbit without any humans present. Look upVarda Space Industries plans to use a small capsule, shown in the rendering above, to conduct pharmaceutical research in space. Varda Space industriesThe future of medicine may take flight in space. Unearthed in Ethiopia in 1974 and representing 40% of a skeleton, the remains revealed an early human relative who lived millions of years before Homo sapiens. Meanwhile, other, more recent fossil discoveries are shaking up what we know about early human migration.
Persons: Varda, Lucy, Dave Einsel, paleoanthropologist Dr, Ashleigh L.A, Wiseman, waddle, Frank Postberg, Jochen Brocks, , Ashley Strickland, Katie Hunt Organizations: CNN, Logan Science Journalism, Marine Biological, Space Industries, Research, British Antarctic Survey, Sky, University of Cambridge, ATP, Freie Universität Berlin, Australian National University, CNN Space, Science Locations: Woods Hole , Massachusetts, California, Antarctica, Weddell, Ethiopia, Barney Creek, Northern Australia, Australia, New England
CNN —Deep ocean water in the Antarctic is heating up and shrinking, with potentially far-reaching consequences for climate change and deep ocean ecosystems, according to a report. They also found that ocean waters deeper than 2,000 meters (6,600 feet) have warmed four times faster than the rest of the global ocean. They are a vital part of global ocean circulation, transporting human-caused carbon pollution into the deep ocean where it remains for centuries, said Silvano. If this deep circulation weakens, “less carbon can be absorbed by the deep ocean, limiting the ability of the ocean to mitigate global warming,” Silvano told CNN. This cold, dense water also has a vital role in supplying oxygen to deep ocean waters.
Persons: Povl, ” Alessandro Silvano, ” Silvano, , Holly Ayres, ” Ayres, Zhou Organizations: CNN, British Antarctic Survey, Weddell, University of Southampton, Reading University Locations: Weddell, Antarctica
Endangered Species Act. Fish and Wildlife Service said emperor penguins should be protected under the law since the birds build colonies and raise their young on the Antarctic ice threatened by climate change. The agency’s review followed a 2011 petition by the environmental group Center for Biological Diversity to list the bird under the Endangered Species Act. Tuesday’s designation was described as a warning that emperor penguins need “urgent climate action” in order to survive by Shaye Wolf, the climate science director at the Center for Biological Diversity. The 1973 Endangered Species Act is credited with bringing several animals back from the brink of extinction, including grizzly bears, bald eagles, gray whales and others.
Endangered Species Act. Fish and Wildlife Service said emperor penguins should be protected under the law since the birds build colonies and raise their young on the Antarctic ice threatened by climate change. The agency's review followed a 2011 petition by the environmental group Center for Biological Diversity to list the bird under the Endangered Species Act. Tuesday's designation was described as a warning that emperor penguins need “urgent climate action” in order to survive by Shaye Wolf, the climate science director at the Center for Biological Diversity. The 1973 Endangered Species Act is credited with bringing several animals back from the brink of extinction, including grizzly bears, bald eagles, gray whales and others.
A new BBC documentary shows a pod of killer whales hunting a seal using a sophisticated technique. They used "wave crashing," creating a wave to break up an ice platform and trap the seal on it. The technique is used by only about 100 killer whales around the world. The video, part of the BBC's new "Frozen Planet II" documentary released Sunday in the UK, shows four killer whales that attacked a Weddell Seal. Once the seal was in the water, the whales used another hunting technique: blowing bubbles to confuse the seal, which made it easier to catch.
O bucată gigantică de gheață, mai mare decât insula spaniolă Mallorca, s-a desprins de calota glaciară a Antarcticii în Marea Weddell, devenind cel mai mare aisberg din lume, a anunțat Agenția Spațială Europeană, citată de Reuters și digi24.ro. Suprafața sa are 4.320 de kilometri pătrați, lungimea ajunge la 175 de kilometri, iar lățimea – la 25 de kilometri. Prin comparație, insula spaniolă Mallorca din Marea Mediterană are o suprafață de 3.640 de kilometri pătrați. Cercetătorii nu atribuie acest eveniment schimbărilor climatice și spun că este o parte din ciclul natural al gheţarilor din regiune. Ei se așteaptă acum a A-76 să se spargă în 3 bucăți.
Persons: Copernicus Organizations: Agenția Spațială Europeană, Reuters, Rhode Island, Aisebergul Locations: Mallorca, Rhode, Antarcticii
Cel mai mare aisberg din lume s-a format în largul Antarticii. Suprafața aisberguluiNoul aisberg are o lungime de 175 de kilometri şi o lăţime de 25 de kilometri. Prin comparaţie, insula Mallorca – o importantă destinaţie turistică a Spaniei, aflată în Marea Mediterană – are o suprafaţă de 3 640 de kilometri pătraţi. Statul american Rhode Island este şi mai mic în raport cu aisbergul A-76, având o suprafaţă de 2 678 de kilometri pătraţi. Cum a fost detectatA-76 a fost detectat în premieră de British Antarctic Survey şi confirmat de National Ice Center din statul american Maryland, folosind imaginile captate de misiunea Sentinel-1, lansată în cadrul programului spaţial Copernicus şi care constă în doi sateliţi cu orbite polare.
Persons: Copernicus, Ted Scambos, Boulder . Organizations: Reuters, Rhode Island, British Antarctic Survey, National Ice, Universitatea, Boulder . Aisbergurile Locations: Mallorca, Antarctica, AGERPRES, Spaniei, Rhode, Americii de Sud, american Maryland, Universitatea Colorado, Boulder
Sursa foto: ESAO bucată gigantică de gheață s-a rupt de calota Antarcticii, devenind cel mai mare ghețar plutitor din lumeAgenția Spațială Europeană raportează că o bucată gigantică de gheață s-a rupt de calota Antarcticii, devenind cel mai mare ghețar plutitor din lume. Botezat de către oamenii de știință cu codul A-76, noul aisberg a fost reperat în imaginile satelitare capturate de misiunea Copernicus Sentinel-1. Are o suprafață de 4.320 km pătrați, dar are o formă alungită, lungă de 175 km, pe o lățime de 25 km. Precedentul aisberg care deținea supremația ca suprafață plutitoare, până la apariția A-76, este A-23A, care are aproximativ 3.380 de km pătrați și plutește, de asemenea, în Marea Weddell, scrie Biziday. Treptat, acești ghețari se topesc, ridicând nivelul oceanului planetar, fapt ce amenință inundarea unor zone de coastă, locuite în prezent.
Persons: Copernicus Organizations: Agenția Spațială Europeană Locations: New, Mallorca, Antarctica
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