MIT physicist Daniel Kleppner explains how matter changes as it is reduced in temperature and nears -273 degrees F, or Absolute Zero.

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"Absolute Zero" is a production of Windfall Films Ltd. and Meridian Productions for TPT/Twin Cities Public Television and WGBH/NOVA in association with the BBC. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers.

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