Braille hasn't changed much in the nearly 200 years it's been around. But with tablets, smartphones and e-readers, how we read things has. Judy Dixon of the National Library Service for the Blind and Physically Handicapped talks with NPR about how technology has changed Braille — and whether it can endure.
Pregnant women are told not to drink, smoke or stress out. But it hasn't been clear how those choices may affect a fetus. By studying how genes are turned on and off, scientists say they are getting closer to understanding what experiences in the womb really affect a child's health.