episode description
As often as they’ve grabbed the headlines, human embryonic stem cells remain an enigma to many people around the around the world. What are these tiny biological entities, and why has stem cell research become such a complex issue? Discover the potential for medical breakthroughs in the next decade. And, over the past 15 years, the number of people who die of AIDS each year around the world has dropped by nearly 20 percent. But AIDS remains a serious public health crisis among low-income African-Americans, particularly women. Meet top research groups studying innovative approaches that could lead to new treatments and possibly a cure. Humans and dogs have been partners for thousands of years. Now our canine friends are joining the fight against cancer. Find out how researchers are training dogs to smell cancer in human patient's breath samples.

