A total of 160 monarchs across Mexico’s six butterfly sanctuaries have been tagged with new transmitters that will provide the most detailed look to date at the first leg of the the insects' migration back north.

After several delays to the mission that will take four astronauts around the moon, NASA held a press conference today announcing that Artemis II is on track to launch as early as April 1.

At least 50 people have died and 125 others are missing after landslides hit three districts in southern Ethiopia following a week of heavy rains, a local official said Thursday.

The curator of the Joggins Fossil Institute says a 20 per cent cut to its provincial funding will devastate operations and force the cancellation of educational programs that reach hundreds of students each year.

A series of tragic deaths in Canada, the U.S. and Europe is showing how tricky avalanches still are to predict. Will that change with global warming?

Astronomers are capturing the first-ever video of a black hole using radio telescopes set up all over the world. Bob McDonald, host of Quirks and Quarks, explains what we could learn about the supermassive black hole at the heart of Messier 87 galaxy that's about 50 million light-years from Earth.

Archaeologists working on Sable Island are celebrating a rare discovery. During an excavation last May, they found surprisingly intact remains from a ship that researchers believe may have wrecked in 1812. The CBC's Andrew Sampson has the story.

A rising number of Canadian facilities are using mobile brain scanners to help patients, by offering MRIs mid-surgery in hospital or diagnosing stroke right on the roadside. So what's the future of this game-changing technology?

The Carney government's strategy to protect nature is expected to be released in the coming weeks — and some nature advocacy groups worry it won't come with any new funding.

A new investigation by animal rights advocates shows horses being flown for slaughter in Japan continue to suffer injuries, illness and even death, reigniting the call for Canada to ban the shipments.

The World Health Organization issued a warning Tuesday about toxic pollutants in the air after U.S.-Israeli strikes on oil depots in and around Tehran raised thick, dark clouds that produced black, oily rain. Scientists tell CBC News the strikes have raised serious health and environmental concerns that could impact water and food sources long after the smoke and black rain clears.

The latest lava fountaining episode of an erupting Hawaii volcano shot 400 metres high Tuesday, prompting temporary closures at a national park and part of an important highway because of falling volcanic fragments, including ash.

Orcas appear in Vancouver Harbour from time to time and often delight residents who catch a glimpse of them. But marine experts say three whales spotted there last week are unlike any previously recorded in B.C. waters.

The Liberal government has earmarked nearly $1 billion for drone and airborne defence research. The money is going into the National Research Council for a variety of defence initiatives, including the purchase of a Bombardier jet for research.

A new study reveals there are an estimated 26,000 unique bee species globally, a staggering jump from previous counts. This "specialization explosion" is the result of millions of years of bees co-evolving with specific flowers and microecosystems. CBC News’ Johanna Wagstaffe looks at how these bee discoveries are happening at a rate that currently outpaces our ability to name them all.

A Dalhousie University student is collecting wasp nests to analyze them for the presence of heavy metals such as copper and chromium.

The director of science at the Canadian Whale Institute, Moira Brown, says speed limits for ships are not enough to prevent collisions with whales, but the proposal to remove them is a "huge conservation setback."

Scientists are deeply concerned about SpaceX's recent proposal to launch one million satellites into orbit around Earth. Their concerns range from a loss of the natural night sky and our access to space, to the environmental impact on our atmosphere.

Astronomers are working to capture the first-ever video of a black hole — a groundbreaking effort that could shed light on how these enigmatic cosmic objects behave and offer clues about the origins of our universe.

Forecasters say a warm storm sweeping across British Columbia this weekend has heightened risks at a time of year that is historically the deadliest for avalanches in Canada.