rearview mirror of Cuba. A recent paper by 3 USC professors concludes that the country’s poor showing is due almost entirely to income inequality. When controlling for income and ethnicity,the paper finds that babies of rich white moms in the U.S. do just as well as their European counterparts; it’s the babies of economically disadvantaged minorities who die at rates comparable to much poorer countries. The researchers point out one potential solution that — no surprise here — comes from Europe: house calls. In countries where nurses visit parents and infants at home, positive outcomes have been found in terms of child abuse, neglect and injury. It’s not known how such programs might effect infant mortality, which sounds like a great opportunity for the U.S. to step up and find out.