DEVELOPING 'Numerous' officers shot in 'active situation' in Charlotte, North Carolina, police say
'Numerous law enforcement officers' have been shot in an 'active situation' in Charlotte, North Carolina, police say.
It’s not just ocean heat that’s affecting marine life – new research shows extremely cold events are welling up and causing mass mortalities. And the same planet-warming pollution that’s driving the climate crisis is likely to blame for these “killer events” on the other end of the temperature spectrum.
The world’s oceans have been plagued by unprecedented heat over the past year, fueling concerns for marine life. Billions of crabs disappeared in the northern Pacific; sea lions and dolphins are washing up sick; iconic coral reefs are undergoing mass bleaching.
But even as ocean temperatures climb, extremely cold upwelling events — when strong winds and ocean currents bring pockets of cold water up to the surface, replacing the warm water that was there — are also becoming more frequent and intense, threatening sea life, according to the study published Monday in the journal Nature Climate Change.
“Climate change is actually really complex,” said Nicolas Lubitz, lead author of the study and a researcher at James Cook University in Queensland, Australia. “It’s not just warming of the globe, but it’s really changing the way our oceans function.”
When Lubitz heard reports of marine animals like sharks, manta rays and squids washing up dead in the southeast coast of South Africa in March 2021, he started investigating. More than 260 marine animals from 81 different species died in that one extreme event.
He said seasonal upwelling events are common in that area, with water temperature dropping quickly. But Lubitz said the March 2021 die-off was “quite an extreme event, because we had rather warm water before it happened.”
“And then the winds changed, and the currents started changing slightly, which is a seasonal thing,” he added. “Then all of a sudden, the temperature within 24 hours dropped by 11 degrees.”
The researchers analyzed killer upwelling events in the Indian Ocean’s Agulhas Current and the East Australian Current, using 41 years of sea surface temperature data and 33 years of wind records to see how deadly cold ocean extremes can be.
“We’re seeing changes in how often the upwelling occurs, how intense it is, which might impact the fishing communities in these areas,” he said. “It’s really an economic thing as well as the biodiversity thing.”
According to the study, the lethality of a cold event is likely linked to how fast the temperature drops. If the cold event lasts for multiple days, which has been occurring more frequently, research shows that marine animals including turtles and many fish species could suffer from hypothermia and physiological malfunction or ultimately die.
For a different study, Lubitz already had bull sharks electronically tagged with a transmitting locator device, which also recorded the depth and temperature of the part of the ocean they swim to.
“That was really the key in this study in that we could see when the sharks migrate,” he said. “We could see how the temperature profiles change, and how the sharks were swimming shallower when they were in upwelling areas because they were trying to avoid the colder water from the depths.”
The findings provide a “very reasonable explanation” to the many unexpected marine mortality events people have been seeing around the world, said Ajit Subramaniam, research professor with Columbia University’s Climate School’s Lamont-Doherty Earth Observatory.
“It’s one of those unexpected findings and it’s not something we talk about a lot,” Subramaniam, who was not involved with the study, told CNN. “And therefore, this is a timely thing to remind us that the climate crisis works in both ways.”
'Numerous law enforcement officers' have been shot in an 'active situation' in Charlotte, North Carolina, police say.
Toronto police say 12 people are facing a combined 102 charges in connection with an investigation into a major credit fraud scheme.
B.C. Premier David Eby has joined other politicians denouncing remarks at a demonstration in Vancouver where protesters chanted “long live Oct. 7,” praising that day's attacks by Hamas on Israel.
Immigration Minister Marc Miller says international students will be able to work off-campus for up to 24 hours per week starting in September.
Members of Parliament are questioning why Canadian security officials did not inform them that they had been the target of Beijing-linked hackers, after learning from the FBI that the international parliamentary alliance they are a part of was in the crosshairs of the Chinese cyberattack in 2021.
Norovirus is spreading at a 'higher frequency' than expected in Canada, specifically, in Ontario and Alberta, according to the Public Health Agency of Canada.
Moderate drinking was once thought to have benefits for the heart, but better research methods have thrown cold water on that.
Tobacco manufacturers have until Tuesday to ensure every king-size cigarette produced for sale in Canada has a health warning printed directly on it.
The clock is ticking ahead of the deadline to file a 2023 income tax return. A personal finance expert explains why you should get them done -- even if you owe more than you can pay.
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.
The lawyer for a residential school survivor leading a proposed class-action defamation lawsuit against the Catholic Church over residential schools says the court action is a last resort.
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.