The human body has been studied for centuries, yet some of its structures and functions continue to raise questions for ...

A genetically modified pig lung remained viable and functional over a period of 9 days after being transplanted into a human recipient who had been declared brain dead, according to research published ...

Many of the body's biggest flaws are the result of evolution building on old designs instead of starting over. Our spine, eyes, teeth, pelvis, and even certain nerves all reveal compromises that ...