See what vehicle emission levels look like in 500 cities across the world
With greenhouse gas emissions usually reported at the global or national level, it can be difficult to determine their prevalence in local communities.
Until now, that is.
A new tool developed by scientists at the Johns Hopkins Applied Physics Laboratory tracks the spread of greenhouse gases such as carbon dioxide at the scale of a city block.
Using artificial intelligence and satellite imaging, researchers are able to provide estimates of vehicle emission levels across 500 cities worldwide.
CTV News Science and Technology Specialist Dan Riskin has more in this month’s Riskin Report.
RISKIN REPORTS
CTVNews.ca Top Stories
Canadian police chiefs speak out on death of Black man beaten by U.S. officers
Canadian police chiefs condemned on Friday the death of a Black man who was savagely beaten by police during a traffic stop in the United States, saying the officers involved must be held accountable.
How to get over the 'mental hurdle' of being active in the winter
When the cold and snow have people hunkering down, these outdoor enthusiasts find motivation in braving the Canadian winter through community and sport.
Memphis police disband unit that beat Tyre Nichols
The Memphis police chief on Saturday disbanded the unit whose officers beat to death Tyre Nichols as the nation and the city struggled to come to grips with video showing police pummelling the Black motorist.
Listening to personal testimonies may deter students from vaping, study finds
According to a new study, showing university students the health risks of vaping through experts and personal testimonies can help deter them from using e-cigarettes.
Health Canada sticks with Evusheld despite U.S. FDA dropping the COVID drug
Health Canada says it will continue to recommend COVID-19 prevention drug, Evulsheld, despite U.S. FDA pulling back its emergency use authorization due to concerns around its efficacy against Omicron subvariant 'Kraken.'
Germany won't be a 'party to the war' amid tanks exports to Ukraine: Ambassador
The German ambassador to Canada says Germany will not become 'a party to the conflict' in Ukraine, despite it and several other countries announcing they'll answer President Volodymyr Zelenskyy's pleas for tanks, possibly increasing the risk of Russian escalation.
W5 EXCLUSIVE
W5 EXCLUSIVE | Interviewing a narco hitman: my journey into Mexico's cartel heartland
W5 goes deep into the narco heartland to interview a commander with one of Mexico's most brutal cartels. W5's documentary 'Narco Avocados' airs Saturday at 7 pm on CTV.
OPINION
OPINION | Selling a home? How to know if you qualify for a capital gains exemption
When selling a home, Canadians may be exempted from paying capital gains tax on a residential property -- if it's their principal residence. On CTVNews.ca, personal finance contributor Christopher Liew explains what's determined as a principal residence, and what properties are eligible for the exemption.
What we know -- and still don't know -- about what led to Tyre Nichols' death
Tyre Nichols was hospitalized after he was pulled over on January 7, police have said. Five Memphis Police Department officers, who also are Black, were fired after an internal investigation and are facing criminal charges, including second-degree murder.
Canada
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Canadian police chiefs speak out on death of Black man beaten by U.S. officers
Canadian police chiefs condemned on Friday the death of a Black man who was savagely beaten by police during a traffic stop in the United States, saying the officers involved must be held accountable.
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How to get over the 'mental hurdle' of being active in the winter
When the cold and snow have people hunkering down, these outdoor enthusiasts find motivation in braving the Canadian winter through community and sport.
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Ontarians can get money back with these personal income tax credits
While the deadline to file your taxes is months away, there are some personal tax credits Ontarians may qualify for that require some time pilfering through receipts to get them.
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Another snowstorm heading for southern Ontario. Here’s when it’ll hit
Just days after a significant snowfall pummelled southern Ontario, another one is forecasted to hit the province this weekend.
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Public to honour former Lt.-Gov. David Onley, lies in state at Ontario legislature
People can pay tribute to former Ontario lieutenant-governor David Onley this weekend as he lies in state for two days at the legislature before his funeral Monday.
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'This is too much': B.C. mom records police handcuffing 12-year-old in hospital
A review has been launched after police officers were recorded restraining a handcuffed Indigenous child on the floor of a Vancouver hospital – an incident the Union of B.C. Indian Chiefs has denounced as "horrendous."
World
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Taliban warn women can't take entry exams at universities
The Taliban on Saturday doubled down on their ban on women's education, reinforcing in a message to private universities that Afghan women are barred from taking university entry exams, according to a spokesman.
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Palestinian gunman kills 7 near Jerusalem synagogue
A Palestinian gunman opened fire outside an east Jerusalem synagogue Friday night, killing seven people, including a 70-year-old woman, and wounding three others before he was shot and killed by police, officials said.
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U.S. mass shootings lead to widening divide on state gun policies
Mass shootings have commanded public attention on a disturbingly frequent basis across the U.S., from a supermarket slaying in Buffalo, New York, to an elementary school tragedy in Uvalde, Texas, to a recent shooting at a California dance hall.
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Tiny radioactive capsule lost in Australia triggers search
Authorities in West Australia were searching for a tiny but potentially deadly radioactive capsule that got lost while being transported on a truck from a mine to a depot in the city of Perth, officials said Saturday.
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Video evidence suggests Alex Murdaugh muddled timeline
Alex Murdaugh's comments to police about his whereabouts around the time his wife and son were fatally shot may not have been accurate, according to video evidence presented by prosecutors Friday at the South Carolina attorney's murder trial.
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Trump opens 2024 run, says he's 'more committed' than ever
Former U.S. President Donald Trump kicked off his 2024 White House bid with a stop Saturday in New Hampshire before heading to South Carolina, appearances in early-voting states marking the first campaign events since announcing his latest run more than two months ago.
Politics
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MPs prepare for return to Parliament as Ottawa marks one-year anniversary of 'Freedom Convoy'
Members of Parliament are making their way back to Ottawa ahead of resuming sitting on Monday, as the city prepares to mark the one-year anniversary of the arrival of 'Freedom Convoy' protesters.
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Inflation-focused Pierre Poilievre back to Parliament as health-care talks loom
With a deal under negotiation between Ottawa and provinces, and premiers invited to a meeting with Prime Minister Justin Trudeau in early February, the issue remains one where the Tory leader's position appears somewhat murky, including to some inside his own party.
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Germany won't be a 'party to the war' amid tanks exports to Ukraine: Ambassador
The German ambassador to Canada says Germany will not become 'a party to the conflict' in Ukraine, despite it and several other countries announcing they'll answer President Volodymyr Zelenskyy's pleas for tanks, possibly increasing the risk of Russian escalation.
Health
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Health Canada sticks with Evusheld despite U.S. FDA dropping the COVID drug
Health Canada says it will continue to recommend COVID-19 prevention drug, Evulsheld, despite U.S. FDA pulling back its emergency use authorization due to concerns around its efficacy against Omicron subvariant 'Kraken.'
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Doctors say surgical training, delayed by the pandemic, continues to be affected
Training of surgeons in Canada has taken a heavy knock from the chaos of the COVID-19 pandemic, and some doctors say their clinical education has been delayed again in recent months as many hospitals across the country cancelled elective procedures to keep up with emergency care.
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Canadians worried about the state of provincial health systems: poll
A new survey suggests the vast majority of Canadians have concerns about the state of the health-care system, particularly in Atlantic provinces where hospitals have struggled to maintain emergency services for months. Leger and The Association for Canadian Studies surveyed 1,554 Canadian adults over a two-day period in January.
Sci-Tech
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Bear on Mars? NASA satellite snaps a strange formation
What looks like a giant teddy bear’s face peering into space from the surface of Mars is actually a satellite image of some craters and a circular fracture, scientists say.
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Nvidia CEO says AI will need regulation, social norms
Nvidia Corp Chief Executive Officer Jensen Huang on Tuesday said that the burgeoning field of artificial intelligence will create powerful tools that require legal regulation and social norms that have yet to be worked out.
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Ice Age relic found by Alberta woman out walking her dogs
A chance discovery by an Edmonton area woman who was walking her dogs has turned out to be a massive fossilized bone that likely belonged to an Ice Age mammoth.
Entertainment
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'It Ends With Us' movie casts Blake Lively and Justin Baldoni
BookTok is all abuzz with the news that Blake Lively and Justin Baldoni will be starring in a movie based on the bestselling romance novel, "It Ends With Us."
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Sabato De Sarno named new Gucci creative director
Italian designer Sabato De Sarno has been named the new creative director of Gucci, and will unveil his first collection during Milan Fashion Week next September, Gucci and parent company Kering announced Saturday.
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Pamela Anderson defends Tim Allen after flashing allegation
Pamela Anderson is addressing discussion about a story regarding her 'Home Improvement' co-star Tim Allen that is part of her new memoir, 'Love Pamela.'
Business
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FTX's Sam Bankman-Fried, DOJ tussle over his communications
Federal prosecutors are trying to prohibit FTX founder Sam Bankman-Fried from privately contacting current and former employees of the bankrupt cryptocurrency exchange to prevent potential witness tampering in a criminal case accusing him of bilking investors and customers.
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Italy's prime minister visits Libya for talks, sign $8B deal
Italy's prime minister visited Libya for talks Saturday with officials from the country's west-based government focusing on energy and migration, top issues for Italy and the European Union. Libya is the third North African country Prime Minister Giorgia Meloni visited over the last two weeks as she seeks to secure new supplies of natural gas.
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U.S. senators call for trade crackdown on Canada over dairy quotas, digital policies
A pair of senior U.S. senators is urging the Biden administration to get tough with Canada for "flouting" obligations to its North American trade partners.
Lifestyle
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How to get over the 'mental hurdle' of being active in the winter
When the cold and snow have people hunkering down, these outdoor enthusiasts find motivation in braving the Canadian winter through community and sport.
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Lifelong Toronto Maple Leafs fan fulfils dream of seeing first game, passes away next day
Mike Davy always dreamed of going to a Toronto Maple Leafs game, and once it finally happened, he passed away the night after.
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Wildcat known for grumpy expression detected for the first time on Mount Everest
One of the planet’s most unique wildcats has been detected for the first time on the tallest mountain on Earth — Mount Everest.
Sports
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Aryna Sabalenka beats Elena Rybakina for Australian Open women's title
Aryna Sabalenka, a 24-year-old from Belarus, who won her first Grand Slam title by coming back to beat Wimbledon champion Elena Rybakina 4-6, 6-3, 6-4 at Melbourne Park on Saturday night, using 17 aces among her 51 total winners to overcome seven double-faults.
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New Vancouver tax intended to chip away at FIFA World Cup costs
The price of hosting the FIFA World Cup is rising in Vancouver, and the province is using a new tool to help cover the costs.
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Bills' thankful Hamlin speaks publicly for 1st time in video
Damar Hamlin released a video Saturday in which he says he's thankful for the outpouring of support and vows to pay it back, marking the first time the Buffalo Bills safety has spoken publicly since he went into cardiac arrest and needed to be resuscitated on the field in Cincinnati on Jan. 2.
Autos
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Canadian Hyundai vehicles unaffected by theft issue in the U.S., company says
Hyundai cars in Canada don't have the same anti-theft issue compared to those in the United States, a company spokesperson says, following reports that two American auto insurers are refusing to write policies for older models.
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Some U.S. auto insurers are refusing to cover some Hyundai and Kia models
Progressive and State Farm, two of America's largest auto insurers, are refusing to write policies in certain cities for some older Hyundai and Kia models that have been deemed too easy to steal, according to one of the insurance companies and media reports.
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See how Amsterdam built a massive underwater bike-parking facility
Amsterdam has shared a time-lapse video of the construction of its brand-new underwater bike-parking facility.
