Rising H5N1 bird flu cases in the U.S. prompted the CDC to study the virus in ferrets, revealing it may have the potential to ...

The "RNA world" hypothesis proposes that the earliest life on Earth may have been based on RNA—a single-stranded molecule ...

A recent study by Harvard reveals that the evolutionary transition to an upright posture in mammals was complex and occurred ...

Animals are showcased in pictures in the Readers Photo Challenge. Sixty-two photos were sent in by 17 readers. Here are some ...

Since animals have limited energy available, investing more energy in growth will reduce the energy they have to maintain ...

Imagine a robot that can detect scents in the air and track down their sources as efficiently as a dog or a mouse. If ...

Humans aren’t the only natural born endurance runners out there. Here’s a look at the animal kingdom’s finest long-distance ...

Sleep is one of the most mysterious, yet ubiquitous components of our biology. It has been described in all major groups of animals, including worms, jellyfish, insects or cephalopods, and in all ...

It’s a moment most house-proud dog owners dread. But now Harvard scientists may have discovered the real reason animals shake ...

Instead, air movements create a highly chaotic environment where odours travel in irregular plumes that can be extremely ...

A bat gym shows that vampires are more like some insects, burning amino acids from blood proteins rather than the carbs or fats other mammals rely on.