Many of the body's biggest flaws are the result of evolution building on old designs instead of starting over. Our spine, ...

Your kidneys are like filters. Your brain is like a computer. Your digestive system is like a tube. Your hands are controlled a bit like a marionette. These comparisons exist in part because doctors ...

The human body is often described as a marvel of “perfect design”: elegant, efficient and finely tuned for its purpose. Yet, when we look closer, a rather different picture emerges. Far from being a ...

A new imaging breakthrough combines ultrasound and light-based techniques to generate vivid 3D images that show both tissue structure and blood vessel activity. Developed by researchers at Caltech and ...