Lawsuit against Meta asks if Facebook users have right to control their feeds using external tools
Do social media users have the right to control what they see — or don't see — on their feeds?
A critical Antarctic glacier is looking more vulnerable as satellite images show the ice shelf that blocks it from collapsing into the sea is breaking up much faster than before and spawning huge icebergs, a new study says.
The Pine Island Glacier's ice shelf loss accelerated in 2017, causing scientists to worry that with climate change the glacier's collapse could happen quicker than the many centuries predicted. The floating ice shelf acts like a cork in a bottle for the fast-melting glacier and prevents its much larger ice mass from flowing into the ocean.
That ice shelf has retreated by 12 miles (20 kilometres) between 2017 and 2020, according to a study in Friday's Science Advances. The crumbling shelf was caught on time-lapse video from a European satellite that takes pictures every six days.
"You can see stuff just tearing apart," said study lead author Ian Joughin, a University of Washington glaciologist. "So it almost looks like the speed-up itself is weakening the glacier. ... And so far we've lost maybe 20% of the main shelf."
Between 2017 and 2020, there were three large breakup events, creating icebergs more than 5 miles (8 kilometres) long and 22 miles (36 kilometres) wide, which then split into lots of littler pieces, Joughin said. There also were many smaller breakups.
"It's not at all inconceivable that the whole shelf could give way and go within a few years," Joughin said. "I'd say that's a long shot, but not a very long shot."
Joughin tracked two points on the main glacier and found they were moving 12% faster toward the sea starting in 2017.
"So that means 12% more ice from Pine Island going into the ocean that wasn't there before," he said.
The Pine Island Glacier, which is not on an island doesn't have pine trees, is one of two side-by-side glaciers in western Antarctica that ice scientists worry most about losing on that continent. The other is the Thwaites Glacier.
Pine Island contains 180 trillion tons of ice -- the equivalent of 1.6 feet (half a meter) of sea level rise -- and is responsible for about a quarter of the continent's ice loss.
"Pine Island and Thwaites are our biggest worry now because they are falling apart and then the rest of West Antarctica will follow according to nearly all models," said University of California Irvine ice scientist Isabella Velicogna, who wasn't part of the study.
While ice loss is part of climate change, there was no unusual extra warming in the region that triggered this acceleration, Joughin said.
"These science results continue to highlight the vulnerability of Antarctica, a major reservoir for potential sea level rise," said Twila Moon, a National Snow and Ice Data scientist who wasn't part of the research. "Again and again, other research has confirmed how Antarctica evolves in the future will depend on human greenhouse gas emissions."
------
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.
Do social media users have the right to control what they see — or don't see — on their feeds?
A 15-year old boy who was critically injured after a stabbing in Nepean on Thursday has died of his injuries, Ottawa's English public school board said Sunday.
Police say it’s fortunate no one was injured or killed in a collision at North Vancouver’s Park and Tilford shopping centre Saturday evening that sent one vehicle careening into a flower shop and another into a set of concrete barriers outside a Winners store.
Princess Anne saluted Canadian veterans and current forces members today during a ceremony at British Columbia's legislature cenotaph commemorating the Second World War's Battle of the Atlantic.
As Canadians brace themselves for summer temperatures, forecasters say a weakening El Nino cycle doesn’t mean relief from the heat.
A child in Texas died Sunday after being swept away in floodwaters as storms swept across the state.
The Maple Leafs battled back from a 3-1 series deficit against the Boston Bruins with consecutive 2-1 victories - including one that required extra time - in their first-round playoff series to push the club's Original Six rival to the limit before suffering a devastating Game 7 overtime loss.
Amid scientists' warnings that nations need to transition away from fossil fuels to limit climate change, Canadians are still lukewarm on electric vehicles, according to a study conducted by Nanos Research for CTV News.
Three people have died and two have been hospitalized after a speeding car struck a tree and landed on another vehicle in Fredericton Sunday morning.
Alberta Ballet's double-bill production of 'Der Wolf' and 'The Rite of Spring' marks not only its final show of the season, but the last production for twin sisters Alexandra and Jennifer Gibson.
A British Columbia mayor has been censured by city council – stripping him of his travel and lobbying budgets and removing him from city committees – for allegedly distributing a book that questions the history of Indigenous residential schools in Canada.
Three men in Quebec from the same family have fathered more than 600 children.
A group of SaskPower workers recently received special recognition at the legislature – for their efforts in repairing one of Saskatchewan's largest power plants after it was knocked offline for months following a serious flood last summer.
A police officer on Montreal's South Shore anonymously donated a kidney that wound up drastically changing the life of a schoolteacher living on dialysis.
Since 1932, Montreal's Henri Henri has been filled to the brim with every possible kind of hat, from newsboy caps to feathered fedoras.
Police in Oak Bay, B.C., had to close a stretch of road Sunday to help an elephant seal named Emerson get safely back into the water.
Out of more than 9,000 entries from over 2,000 breweries in 50 countries, a handful of B.C. brews landed on the podium at the World Beer Cup this week.
Raneem, 10, lives with a neurological condition and liver disease and needs Cholbam, a medication, for a longer and healthier life.