From the first surgeries to the state-of-the-art technologies in today's operating rooms, medicine has been the most impactful science in the lives of humans. No one can estimate the number of lives that have been eased or saved by medical progress. And yet, medical professionals continue to discover new treatments, find new cures, and invent leading edge techniques that could save even more lives in the future. Part of the "Global Science" series. Please note this title shows medical procedures including mammograms. It also shows medical experiments conducted on animals.