Looking into why African-American infant mortality rates are twice as high as those for white Americans; and understanding the "Hispanic Paradox."

"When the Bough Breaks" -- African-American infant mortality rates remain twice as high as white Americans. In fact, African-American mothers with graduate degrees face a greater risk of having pre-term, low birth-weight babies than white mothers who haven't finished high school. Investigators are circling in on how the chronic stress of racism throughout a life can become a risk factor embedded in the body.

"Becoming American" -- Recent Mexican immigrants, on the other hand, though poorer, tend to be healthier than the average American. But the longer they're here, the worse their relative health becomes. This is known as the "Hispanic Paradox." Is there something about life in America that is harming their health? Conversely, what is protective about new immigrant communities that we can learn from?