Nano - Sixty Symbols

The world's most powerful microscopes are similar to old-fashioned record players.

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Michio Kaku on the space elevator

Now that the shuttle has been retired, the hunt is on for revolutionary technologies to economically lift cargo and humans into space. And a space elevator just may be the answer. According to renowned physicist Michio Kaku, recent developments in nanotechnology may make this technological marvel a reality by the end of this century.