NOVA takes an intimate look at Robert Tory Peterson, the man whose best-selling guide books to ornithology have played a pivotal role in turning bird watching into a mass sport.

What is it like not to be able to communicate with others? NOVA explores the severest of speech disabilities with Dick Boydell—born with cerebral palsy, confined to a wheel chair and unable for 30 years to say more than "yes" or "no" and investigates some of the new technology that gives the speechless a "voice."