Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch NOVA Season 18 Episode 15 Online

  • 6.8/10
  • COUNTRIES: United States of America
  • Subtitles: English

The tallest mountain in the world? Think again—cartographers had to when satellite date revealed a peak called "K2" might be the real champ. Which is the world's tallest mountain?