Add Yahoo as a preferred source to see more of our stories on Google. 1.Here's what a tattoo looks like under a macro lens. 4.Did you know babies' skulls aren't fully fused when born? You can ...

A new study on fear shows your body reacts to modern dangers like guns and disease, just like ancient threats such as snakes and heights.

Modern comforts promise ease, yet a growing body of research suggests our bodies are still tuned for a very different world. Instead of thriving, many of us are developing chronic illnesses, fertility ...