Here's where Canadians are living abroad: report
A recent report sheds light on Canadians living abroad--estimated at around four million people in 2016—and the public policies that impact them.
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."
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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.
A recent report sheds light on Canadians living abroad--estimated at around four million people in 2016—and the public policies that impact them.
The 2024 federal budget announced on April 16 included plans to introduce “halal mortgages” as a way to increase access to home ownership.
Polish President Andrzej Duda says while no decision has been made around whether Poland will host nuclear weapons as part of an expansion of the NATO alliance’s nuclear sharing program, his country is willing and prepared to do so.
One person was killed in a six-vehicle crash on Highway 400 in Innisfil Friday evening.
Ontario is now home to an invasive and toxic worm species that can grow up to three feet long and can be dangerous to small animals and pets.
Harvey Weinstein’s lawyer said Saturday that the onetime movie mogul has been hospitalized for a battery of tests after his return to New York City following an appeals court ruling nullifying his 2020 rape conviction.
It's one thing to say you like Taylor Swift and her music, but don't blame CNN's AJ Willingham's when she says she just 'doesn't get' the global phenomenon.
A number of LGBQT+2s groups in Central Alberta are pushing back against a request from the Red Deer South UCP constituency to reinstate MLA Jennifer Johnson into the UCP caucus.
Mookie Betts went 3 for 5, including a triple and an RBI single, as the Los Angeles Dodgers beat the Toronto Blue Jays 4-2 on Saturday.
As if a 4-0 Edmonton Oilers lead in Game 1 of their playoff series with the Los Angeles Kings wasn't good enough, what was announced at Rogers Place during the next TV timeout nearly blew the roof off the downtown arena.
Mounties in Nanaimo, B.C., say two late-night revellers are lucky their allegedly drunken antics weren't reported to police after security cameras captured the men trying to steal a heavy sign from a downtown business.
A property tax bill is perplexing a small townhouse community in Fergus, Ont.
When identical twin sisters Kim and Michelle Krezonoski were invited to compete against some of the world’s most elite female runners at last week’s Boston Marathon, they were in disbelief.
The giant stone statues guarding the Lions Gate Bridge have been dressed in custom Vancouver Canucks jerseys as the NHL playoffs get underway.
A local Oilers fan is hoping to see his team cut through the postseason, so he can cut his hair.
A family from Laval, Que. is looking for answers... and their father's body. He died on vacation in Cuba and authorities sent someone else's body back to Canada.
A former educational assistant is calling attention to the rising violence in Alberta's classrooms.
The federal government says its plan to increase taxes on capital gains is aimed at wealthy Canadians to achieve “tax fairness.”