We talk about the ridiculously complicated science involved in measuring Mount Everest with NPR international correspondent Lauren Frayer. And we'll hear why the height of the world's highest peak is ever-changing.Looking for more? You can read Lauren's story here at our episode page. It's got links, photos, and other cool information. You can find Lauren on Twitter @lfrayer and host Maddie Sofia @maddie_sofia. Email the show at shortwave@npr.org.