Air quality advisories issued in 5 provinces, 1 territory
Air quality advisories are in effect across Western Canada as smoky conditions plague some areas, according to the latest forecasts. Here's where.
Researchers in the United States have uncovered what they believe is evidence to suggest that once-massive icebergs floated from northern Canada to southern Florida.
Using high-resolution sea floor mapping, researchers at the Woods Hole Oceanographic Institution (WHOI) and the United States Geological Survey (USGS) discovered about 700 iceberg scours -- a term referring to “plow marks” on the ocean floor from icebergs -- that run from North Carolina to the Florida Keys.
“The idea that icebergs can make it to Florida is amazing,” WHOI climate modeller Alan Condron said in a news release. “The appearance of scours at such low latitudes is highly unexpected, not only because of the exceptionally high melt rates in this region, but also because the scours lie beneath the northward flowing Gulf Stream.”
The research, published on Thursday in the journal Nature Communications, state the icebergs were about 300-metres thick. They made the more than 5,000-kilometre trip roughly 31,000 years ago in a period known as Heinrich Event 3, which is already known for massive iceberg discharges.
“We also expect that there are younger and older scours' features that stem from other discharge events, given that there are hundreds of scours yet to be sampled,” said USGS research geologist Jenna Hill.
Given the high temperatures in the ocean water near the southern states and the natural flow of the Gulf Stream in the opposite direction of the icebergs’ travel, the researchers believe the only way the iceberg could make it that far before melting is “massive, but short-lived” glacial meltwater discharge from Hudson Bay.
“What our model suggests is that these icebergs get caught up in the currents created by glacial meltwater, and basically surf their way along the coast,” Condron said. “When a large glacial lake dam breaks and releases huge amounts of fresh water into the ocean, there’s enough water to create these strong coastal currents that basically move the icebergs in the opposite direction to the Gulf Stream.”
The researchers also note that these icebergs are crucial in controlling how much warmer water is transported from the southern U.S. to Europe through the Gulf Stream.
“As we are able to make more detailed computer models, we can actually get more accurate features of how the ocean actually circulates, how the currents move, how they peel off and how they spin around,” Hill said. “That actually makes a big difference in terms of how that freshwater is circulated and how it can actually impact climate.”
Air quality advisories are in effect across Western Canada as smoky conditions plague some areas, according to the latest forecasts. Here's where.
After receiving a DNA kit one Christmas from his son-in-law, Hugh McCormick soon discovered that he had six unknown siblings, with whom he shared the same birth parents.
Four years on, the controversy over whether airlines owed refunds to passengers after cancelling hundreds of thousands of flights during the pandemic continues to simmer, aggravated by a sluggish, opaque complaints process.
Many foods fall under the category of ultraprocessed foods, depending on their exact ingredients. This type of food has been studied a lot lately, and the results aren’t great.
Dozens of Ontarians are expressing frustration in the province’s health-care system after their family doctors either dropped them as patients or threatened to after they sought urgent care elsewhere.
A new study projecting declining rates of cancer cases and deaths in Canada demonstrates the success of prevention and early detection programs, but also highlights areas where more work is needed to save and prolong lives, researchers say.
The star prosecution witness in Donald Trump's hush money trial is set to take the stand Monday with testimony that could help shape the outcome of the first criminal case against an American president.
Millions of Indians across 96 constituencies began casting their ballots on Monday as the country's gigantic, six-week-long election edges past its halfway mark. Prime Minister Narendra Modi is seeking a third straight term with an eye on winning a supermajority in Parliament.
An Ottawa pizzeria is being recognized as one of the top 20 deep-dish pizzas in the world.
English, history, entertainment, math and geography: high school trivia teams could be quizzed on any of it when they compete at the Reach for the Top Nationals in Ottawa in June.
An Ottawa pizzeria is being recognized as one of the top 20 deep-dish pizzas in the world.
A family of fifth generation farmers from Ituna, Sask. are trying to find answers after discovering several strange objects lying on their land.
A Listowel, Ont. man, drafted by the Hamilton Tigercats last week, is also getting looks from the NFL, despite only playing 27 games of football in his life.
The threat of zebra mussels has prompted the federal government to temporarily ban watercraft from a Manitoba lake popular with tourists.
A small Ajax dessert shop that recently received a glowing review from celebrity food critic Keith Lee is being forced to move after a zoning complaint was made following the social media influencer’s visit last month.
The Canada Science and Technology Museum is inviting visitors to explore their poop. A new exhibition opens at the Ottawa museum on Friday called, 'Oh Crap! Rethinking human waste.'
The Regina Police Service says it is the first in Saskatchewan and possibly Canada to implement new technology in its detention facility that will offer real-time monitoring of detainees’ vital health metrics.
Just as she had feared, a restaurant owner from eastern Quebec who visited Montreal had her SUV stolen, but says it was all thanks to the kindness of strangers on the internet — not the police — that she got it back.