Have you ever wondered what animals are really thinking when they sense you nearby? Here's the thing: while we hike, drive, or simply exist in shared spaces, countless creatures are working overtime ...

With three hearts, blue blood, and the ability to squeeze through a space the size of their eyeballs, octopuses are said to be like aliens on Earth. The new National Geographic docuseries, "Secrets of ...

Sea turtles caught as bycatch are suffering from the bends, scientists have found. Most sea turtle species around the world are endangered. This is largely due to commercial fishing activities that ...

It's tempting to think that, with our fancy electric lights and indoor bedrooms, humanity has evolved beyond the natural influence of sunlight when it comes to our sleep routines. But new research ...