Why do these colorful caterpillars twitch in unison when a human speaks to them — is it a cool party trick, or something much ...

Predators tend to target young animals because they are easy prey. If young are born asynchronously, predators can eat a ...

It’s ancient, unstoppable and strangely contagious. Here’s what science now knows about the humble yawn, and why evolution ...

Fitness experts explain what your push-up count says about your strength, why the exercise is so effective, and how to ...

Giant migrating contractions (GMCs) are powerful waves of colonic movement that propel intestinal contents toward the anus ...