When Dublin scientist Emma Murphy got word that a dead Greenland shark had washed up on the shores of northwestern Ireland, she was gobsmacked. Not only are the massive and ancient ocean dwellers notoriously elusive, but they usually make their homes in the remote depths of the Arctic and North Atlantic oceans.

An unusually large troop of chimpanzees displayed cooperation and social cohesion for decades, until something shifted and they started to turn on each other.

Jeremy Hansen sat down with CBC News to share some of his insights, like how he felt during lift-off, the joy the mission brought him, and that one time he accidentally let a water bag explode in the capsule.

In this issue of our environmental newsletter, we look at how AI could help protect important ecosystems; get an update on offshore wind in the U.S.; and find out why Parks Canada is connecting with social media influencers.

A popular fertilizer that helps feed most of the world can degrade nearly half of all freshwater bodies on the Canadian Prairies, according to a new study by a group of Manitoba and Saskatchewan researchers. However, one expert says the findings may be an "overstatement."

After flying 406,771 kilometres around the moon — the farthest any humans have ever been — Canadian Space Agency astronaut Jeremy Hansen and NASA astronauts Reid Wiseman, Victor Glover and Christina Koch are ready to share more of their experiences with the public. CBC will have live coverage of today's news conference as they take questions from the media at the Johnson Space Center in Houston, Texas, at 2:30 p.m. ET.

Etsy has announced it’s banning the sale of fur items on the site in August. The Fur Institute of Canada warns the move will hit Indigenous artisans hardest, who often rely on the site as a major source of income.

The Artemis II astronauts made many mind-blowing images during their historic lunar mission earlier this month. They have two NASA trainers to thank for equipping them with tried-and-true digital SLR cameras and sharing their photo skills.

Teresa Patry, a Vermilion, Alta., farmer and rancher, has two active oil wells operating on her land, which, according to an air quality assessment, are venting a steady stream of potentially dangerous greenhouse gases downwind from where she lives with her family and livestock. But, according to Alberta's energy regular, everything is operating as it should be.

Just in time for nesting season, volunteers with the Calgary Area NestBox Monitors Society are replacing worn-out bird boxes with newer models. We tagged along to see what's involved and why the work is so important for a variety of species.

Julietta Sorensen Kass didn’t expect so many people to respond with interest to her social media post offering to gift tobacco she'd grown in her northwest Calgary yard for prayers and ceremonies. She says she's been blessed with connections and so much more in return.

Earthquakes Canada is reporting a 3.9 magnitude quake north of Shawville, Que., early Tuesday afternoon.

Prince Edward Island is rich with fossils from the Permian period, roughly 290 million years ago. A lot of the known specimens in the province are discovered by children, making the third annual Fossil Day in Charlottetown that much more important for teaching young people how to identify them. CBC P.E.I. went to check it out.

For decades, this ferocious scavenger has been absent from the Labrador landscape but there’s renewed hope the endangered wolverine might be making an official comeback.

Science is under attack. In an era of AI, instant misinformation and hidden agendas, how do you tell the difference between real science and well-packaged fraud? CBC News's Johanna Wagstaffe breaks down the peer review process — the critical filter that determines what science the public can trust.

Researchers are turning to a new high-tech combination of drones, thermal cameras and artificial intelligence to get a new vantage point on Alberta’s wild boar problem.

Conservation groups say recent calls for the provincial government to legalize the hunting of threatened grizzly bears in Alberta aren't justified by science due to a lack of up-to-date population studies.

McGill University’s Macdonald Campus has a new greenhouse, which features seven bays, a classroom and demonstration rooms. Staff explain how they plan to use these new facilities.

Instead of firing artillery weapons or throwing explosives from a helicopter, a Canadian company is using drones for avalanche control.

The City of Whitehorse is preparing residents for the spring freshet — or spring melt — season, and the possible landslides to follow in the downtown core. Officials say this year's snowpack is similar to 2022, when a series of landslides closed Robert Service Way for weeks and put homes at risk.