The environmental organization Ontario Nature says Ontario’s Bill 5 puts the future of polar bears in the province at risk.

For nearly 50 years, a mysterious fossil unearthed during the construction of Islington subway station has refused to give up its secrets — until now.

Marineland's crumbling infrastructure, staffing shortage and lack of resources have created dangerous conditions for its belugas and they should be moved immediately, a fired beluga trainer says.

Global warming is crossing dangerous thresholds sooner than expected, with the world's coral reefs now in an almost irreversible die-off, marking what scientists on Monday described as the first "tipping point" in climate-driven ecosystem collapse.

A salmon reintroduction initiative in B.C. is celebrating after two tagged adult sockeye, released as juvenile fry two years ago, were detected returning up the Columbia River.

Medical students at Dalhousie University won't be learning anatomy by working with cadavers this year after the laboratory failed air quality tests over the summer.

Harvest is close to done on the Prairies, but some farmers' crops are being overrun by kochia, an invasive weed. They hope scientists can stop the spread before food production is affected forever.

More than 300 birds that had crashed into windows across the Greater Toronto Area were found last Wednesday by a volunteer-based organization that finds and keeps records on bird safety. Most did not survive.

In order to maintain a presence on the moon, there’s going to be a need for energy. How do you maintain a colony of people in a place that has roughly 14 days of sunlight followed by 14 days of darkness? The answer: nuclear energy. And Canada is in a good position to provide it.

A science team from Lakehead University and a film crew from southern Ontario completed a nine-day expedition to explore the Superior Shoal, an underwater mountain that rises nearly 300 metres from the bottom of Lake Superior. The shoal’s remote location has left it something of a mystery, but here’s what the expedition-goers’ work has uncovered.

Cancer treatments don't always work as expected, leaving patients to suffer side effects of chemotherapy without gaining benefits. Now scientists are exploring whether tiny proxy organs made in the lab from a patient’s own cells can do a better job at predicting treatment success.

Mayor Jim Diodati says Marineland representatives told him they’ve restructured and borrowed funds to continue to buy food for the remaining belugas, dolphins, sea lions, seals, deer and bears that remain at the closed Niagara Falls, Ont., theme park, but it’s only a matter of time before the money runs out.

To celebrate the 50th anniversary of CBC’s Quirks & Quarks, host Bob McDonald gathered six of Canada’s top scientists to imagine what the next half-century of scientific progress might bring. From lab-grown proteins and climate-resilient cities to bionic suits and decoding dark matter, here’s what the future could look like.

As the Carney government promotes artificial intelligence as part of its bid to grow the Canadian economy, some inventors who use the technology and experts who study its impacts are calling on Ottawa to add more guardrails — something the federal government is actively examining.

As Quirks & Quarks celebrates its 50th anniversary, Bob McDonald looks back at a half century of science and peers forward to the next 50 years.

Marineland’s 30 belugas remain at the defunct Niagara Falls, Ont., amusement park after Ottawa turned down its export request. But as the company says it’s running out of money to care for the whales and with no other facility in Canada able to take them, many wonder where they could go now.

Marineland has threatened to euthanize their 30 belugas if the federal government doesn’t supply financial support. But experts say that comes with a host of logistical and moral issues.

Ontario theme park says serious environmental issues and a "total lack of proven financial viability" mean the proposed N.S. sanctuary is not an option.

Scientists Susumu Kitagawa, Richard Robson and Omar Yaghi won the 2025 Nobel Prize in Chemistry "for the development of metal-organic frameworks," the award-giving body said on Wednesday.

Ottawa wildlife photographers have captured stunning images of a rare leucistic beaver.