Ten years ago, I was working as a doctor in Ghana. I specialized in HIV/AIDS, but at the time, there was little I could do.... Back then, AIDS was a heartbreaking death sentence. In the decade since, so much has changed. The cost of ARV medication has come down dramatically -- from what was as prohibitively high as $20,000 a year to as little as 40 cents a day in sub-Saharan Africa....This very medication, which keeps people living with HIV alive and healthy, can also enable HIV+ pregnant women to deliver HIV-negative babies.