Government accuses AT&T of cheating it out of millions

AT&T's been accused of cheating the government by letting fraudsters  take advantage of a subsidized phone service intended for deaf people.

Language is necessary to understand numbers, study finds

Numbers above three are incomprehensible to people who don't speak a language that uses symbols for counting, say researchers at the University of Chicago.

Device lets deaf phone users talk with sign language

As many as two million people in the US alone could soon get the chance to use their native language on a cellphone for the first time.