The fluffed-up, round bird sitting on a tree branch outside our window is another. Demonstrating “piloerection” when the ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea slugs.

The blue whale holds the title as the largest animal ever known to have lived on Earth. This video explores how big blue whales can grow, how they survive in the ocean, and what makes them such ...

Watching an octopus punch an annoying fish is hugely satisfying to frustrated humans. And other animals do the ...

One of the most attractive critters at the zoo splashes through frigid waters: polar bears, the beauties of the Arctic Circle. Most humans will never see a polar bear in the wild. So, we have to rely ...

The deep sea is home to some of the largest and strangest creatures on Earth. Scientists have long noticed a pattern of extreme size at great depths, but the reasons remain debated. Factors like ...

Many populations improved because the Marine Mammal Protection Act worked.

While the average person may believe we’re losing species faster than we can discover new ones, that may not be the case. A recent analysis hosted at the University of Arizona has researchers arguing ...

From Big Sur to the Great Wall of China, these picturesque races will inspire globetrotters to lace up and run 26.2 miles.

Researchers from the California Academy of Sciences in San Francisco described 72 new species last year, from elegant birds ...

Octopuses may have big brains because of environmental – not social – factors. Large brains in mammals are generally thought to be linked to social behaviour, an idea known as the social brain ...

Rare deep sea footage off Argentina shows a giant phantom jellyfish. Here are some facts, its size compared to humans and ...