The theoretical physicist Richard Feynman was renowned for his ability to explain complex concepts to a non-expert audience. He was at times, however, less adept when communicating with writers, as ...

Teacher Jennifer Martinez works with Head Start students Arya, left, Baruc and Noah at the Blind Children's Center in East Los Angeles. (Genaro Molina/Los Angeles Times) In Saul Valdivia's preschool ...