Columbia University Medical Center transplant team's efforts to secure a liver transplant for a 4-yr-old girl during Hurricane Sandy.

The robotic system designed by Drs. Dennis Fowler and Peter Allen of Columbia University enters the body through a remarkably small incision.

Why solving obesity is more complicated than a couple of Twinkies. By Abdul El-Sayed, The 2X2 Project

Here's a holiday feast survival guide to keep you and your diet from straying too far this year.