The ability to identify musical notes by ear is usually thought to be something developed early in life. Now a Harvard study says a drug normally used as a mood stabilizer might allow adults with no musical experience to learn perfect pitch.
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.