Take a look around your home and you'll find yourself surrounded by familiar comforts—photos of family and friends on the ...

The skin, the body's largest organ constantly regenerates, contains sensory receptors, and produces melanin for pigmentation.

The second person ever has received a transplant with a genetically modified pig kidney. Tim Andrews, a 66-year-old who lives in Concord, N.H., has end-stage kidney disease and had been on dialysis ...