In science, the gap between prophecy and fact has narrowed amazingly. The most remote-seeming theories are speedily turned into fact, at least in the lab. Hence the future often seems to arrive with the morning mail—and now, with a flick of the TV dial. A late-season sleeper called The 21st Century, narrated by Walter Cronkite (CBS, Sundays) is bringing forth little weekly chunks of the future as it exists today.
On this week's program, for example, Co-Producers Burton Benjamin and Isaac Kleinerman, both nine-year veterans of CBS's distinguished series, The 20th Century, set out to make some documentary sense of...
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