There were more than 48,000 organ transplants in the United States last year. They’re commonplace now, but the practice was considered experimental only a half-century ago.

CNN’s Dr. Sanjay Gupta explores how pigs could help address the human organ shortage through xenotransplantation. Learn how both a pig’s similarities and differences make their organs a good match for ...

Did you know that some creatures have the ability to regenerate? Here's our list of fascinating animals that regenerate.

One mother’s decision to donate her late daughter’s organs gave a young girl a second chance, forming a bond no one expected.