Canada's weather warnings have changed to a new colour-coded, risk-tiered system implemented by Environment and Climate Change Canada. The three alert levels — yellow, orange and red — are based on the potential impacts of a weather event and the forecast confidence.

Bob McDonald’s Blog: Recent studies show that using chatbots like ChatGPT may get us information faster than ever before, but we’re not gaining much knowledge by using it.

From infrared thermal cameras to hydrophones, these B.C. residents offered up space on their properties as researchers look to help safeguard marine mammals.

The barn owl, one of Canada's most endangered owls, isn't native to Alberta and is considered extremely rare anywhere in the province, which is why wildlife photographers were shocked when one made a surprise appearance in a Calgary park.

Why are bridges first to get slippery, even before a snowfall? Watch to learn as CBC’s Riley Laychuk explains why.

Galapagos tortoise Gramma, who was believed to be about 141 years old, has died at the San Diego Zoo, according to zoo officials. She was their oldest resident.

B.C. conservation officers say a second grizzly bear has now been captured in Bella Coola, though it has not been established whether the animal was involved in last week’s attack on an elementary school group.

Video captured by the U.S. Geological Survey on Nov. 23 shows the formation of a dome fountain of lava in a crater on Hawaii's Kilauea volcano.

Canadian-born researcher Joanna Harper has been studying the ways hormone therapy makes a difference in transgender athletes' performance for nearly two decades. Her most recent study, which she was working on in the United States, lost its funding bringing her back to Canada.

In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it was colder than it was on Mars. Well, get ready to hear more about it.

As B.C. conservation officers continued to search for the three grizzlies involved in Thursday’s attack on an elementary school group in Bella Coola, residents say the incident reflects years of rising bear encounters in the remote Central Coast community.

The Point Lepreau Bird Observatory is marking 30 years of monitoring the seabird migration in a location perfectly positioned to capture the entire migration pattern of more than 100 different species.

The Community-Oriented Coastal Observatory needs samples from around the province, so they're recruiting volunteers just like them to help with this project.

While the Maritimes suffered through a long drought this year, Sable Island didn't have the same problem. That's because the island located 290 kilometres southeast of Halifax has a large underground supply of fresh water.

Downtown Dawson Creek isn’t where you might expect to take a tour of the history of the Space Race. But hidden inside an autobody shop, space historian Nick Proach has filled the city's newest museum with dozens of scale model rockets that have appeared in museums, world fair exhibits, and even aboard NASA spacecraft.

The Alberta government is considering using AI technology to write a law for the first time, eyeing a forthcoming piece of whisky legislation as its test case.

Two researchers at Western University in London, Ont., are studying how to improve the way artificial intelligence understands toddlers' speaking patterns. They're recruiting preschool-age children to examine how they speak and use that data to train an AI model.

Space is a harsh environment: it's a vacuum with freezing temperatures, super high ultraviolet radiation and, of course, almost no oxygen. But Japanese researchers have found a type of moss that doesn’t really care about much of that.

Canada's Invasive Species Centre held a workshop at Windsor's Ojibway Nature Centre to raise local awareness of the spotted lanternfly — and its egg masses. The Asian plant-eating insect is expected to have a major impact on Canada's wine and fruit-farming industries.

Every winter, tens of thousands of bald eagles descend on the lower Fraser Valley — a migration biologists say forms the world’s largest congregation of eagles.