Scientist and writer Dr. Arno Penzias (PEN-zee-us). He won the Nobel Prize for Physics in 1978 for his work supporting the big-bang theory of the universe. Now, as vice-president of research at AT&T he's responsible for innovation and risk-taking. Though Penzias is at the forefront of technological development, he remains aware of its human implication. His book, "Ideas and Information" is a crash course on the history of computers and communications-technology and is addressed to the general reader.