With cocaine and its metabolite, benzoylecgonine, being detected in waterways across the globe, Canadian researcher Erin McCallum and her team set out to understand the impact of these illicit drugs on fish in Sweden.

Calving season, the most labour-intensive part of a beef producer's year, could be shortened thanks to a new innovation out of the University of Saskatchewan.

The walls of a corridor that once linked two theatres in the ancient Roman city of Pompeii hold hundreds of inscriptions made by residents before Mount Vesuvius erupted almost 2,000 years ago. An international research team is now using a very modern technique to bring them to life.

Concerns are growing about how some young people engage with AI chatbots. Meta is rolling out a tool to let parents monitor topics their children discuss at the same time as Manitoba is proposing banning use of AI chatbots for youth. More research is needed, but evidence suggests some risk factors for mental health.

The Artemis II lunar mission is over, and NASA is already looking ahead, planning to put astronauts on the surface of the moon by 2028. But there are a lot of hurdles that need to be cleared before that happens.

A recent spotted lanternfly discovery in St. Catharines, Ont., is renewing concern about the destructive insect reaching Canada from the United States. Experts say the invasive insect poses a serious threat to vineyards, fruit trees and hardwoods because it feeds on plant sap and can kill grapevines.

A company that was aiming to build its first small modular nuclear reactor in New Brunswick is putting some of its assets up for sale as its future in the province is increasingly in doubt.

As hospitals increase their use of artificial intelligence to improve patient care, a U.S. study has found that an AI tool has proven effective at making emergency medical diagnoses — even better than actual doctors, in some cases.

Seasonal allergies are getting worse in Canada, with longer and stronger pollen seasons, largely thanks to climate change. Here's a primer on the hardest-hit cities, the latest science and what treatments can help you survive another allergen-filled spring and summer.

As Metro Vancouver’s population grows and its reliable snowpack shrinks, the race is on to secure the region's water supply for the next century. But the solutions on the table are bolder than you might expect, ranging from tapping backup lakes to giant straws and massive dam expansions. CBC's Johanna Wagstaffe investigates how the city plans to keep the taps running. Correction: This video was edited after it was first published to correct spelling errors in the names of two people.

Twenty-three North Atlantic right whales were born during this year's calving season — the highest number in more than 15 years.

An investigation over whether temperature sensors at the Paris airport were tampered with to manipulate winning bets online is putting a new focus on the growing popularity of climate-related wagers.

Saugeen Ojibway Nation is challenging the portrayal of footage of a 'fish city' in the warm waters near Bruce Nuclear Generating Station as a 'fish trap,' raising questions about ecological costs as the operator seeks to raise reactor limits.

Clint Gottinger, a tow truck driver in rural Saskatchewan, was heading out to work when he noticed a moose trapped in some ice.

In a statement, the province says it has changed how domestic sheep are classified under the Wildlife Act in order to prevent disease from being transmitted in what could be large-scale die-offs in wild herds.

An investigation by Radio-Canada’s Enquête program showed that fake maple syrup was being sold on Quebec grocery store shelves. Producers at one Quebec sugar shack tried both pure and bogus syrup and highlighted the differences.

They say it happened sometime between 8 p.m. Apr. 23 and 8 a.m. Apr. 24 in the marsh area of the park — and are looking to hear from anyone who’s aware of a firearm being illegally discharged.

Prince Edward Island's oyster growers have been hit hard by MSX and dermo, two diseases that are harmless to people but can be fatal to the mollusk. They say P.E.I.'s industry is being wiped out.

Chances are, at some point, everyone encounters a not-so-welcome visitor in or around their home. Perhaps a destructive squirrel in the attic, a smelly skunk under the porch or a raccoon absolutely destroying garbage bins — but this story, dear reader, is about a family of otters.

A cidery in eastern Newfoundland has been submerging their bubbly beverages beneath the waves for some additional flavour.