Inside the Human Genomics Lab at Pennington Biomedical Research Center, Dr. Tuomo Rankinen points to a chip -- much like one you'd find in a computer -- that contains DNA samples. The chips are designed to read genetic markers, or DNA sequences, that determine things like blood type and eye color, and also risk for diseases like obesity.
Being overweight hurts your earnings, and being an overweight woman is particularly tough on income. Back in 2004, a landmark study found that a 65-pound increase in a woman's weight is associated with a 9-percent drop in earnings. The authors of the study noted that, in terms of wages, the "obesity penalty" basically amounted to losing three years of experience in the workplace.
Keith Plessy, descendant of the man who tested Louisiana law requiring separate railroad cars, discusses how he came together with Pheobe Ferguson, the great-great granddaughter of the judge who upheld the law.