What does 2002 hold for health?

(CNN) -- From anthrax to stem cells, the medical community faced a variety of challenges and made some great strides in 2001.

VIDEO CNN Medical Correspondent Rea Blakey reports on new medical developments for the upcoming year (January 2) Play video (QuickTime, Real or Windows Media)

Many advances, like the artificial heart, hold the promise of making life longer and better for millions of people. But others brought controversy along with discovery. The debate over human cloning and stem cell science won't be easily resolved.

CNN's Rea Blakey examines the issues that are likely to dominate medical science in 2002.