Employees say toxins at the Canadian Armed Forces base caused cancers, neurological disorders and other illnesses ...

Two companies, Real Ice and Skyward Wildfire, say their geoengineering tech can help mitigate climate change. Does it work? Are there unforeseen risks?

The author-illustrator is bringing the aquatic stars of his popular early graphic novel series into a new format in This Book Is Dangerous!: A Narwhal and Jelly Picture Book.

On this week's episode: using magnets for brain surgery, fish use tools to find food, cold plunges actually have health benefits, and narwhals use their iconic tooth for play.

Narwhal, a 10-week-old puppy brought to a Missouri dog rescue, has a tail growing out of his head. He's already a social media sensation.

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean, ...

The “unicorns of the sea” have fascinated mariners and royalty for centuries, but we still don't know exactly what their tusks are for.

Intriguing video of narwhals using their tusks to mess with fish has scientists speculating about what this behavior might mean.

Scientists previously thought the narwhal’s trademark tusk helps males compete for mates, but new evidence suggests it may also have a role in foraging and play.

Narwhals have fascinated and confounded humans for centuries. The Peabody Essex Museum is diving into the mystery, history and science of the tusked “unicorns of the sea.” ...

After capturing a narwhal for a short 30 minute period to measure its brain and heart activity in response to the exposure of part of its tusk to salty or fresh water, he showed that salty water led ...