Meet The 'Glacier Mice' : Short Wave (Encore episode.) In 2006, while hiking around the Root Glacier in Alaska, glaciologist Tim Bartholomaus encountered something strange and unexpected on the ice — dozens of fuzzy, green moss balls. It turns out, other glaciologists had come across glacial moss balls before and lovingly called them "glacier mice."

NPR science correspondent Nell Greenfieldboyce and Short Wave reporter Emily Kwong talk about glacial moss balls and delve into the mystery of how they seem to move as a herd.

Read more of Nell's reporting on glacier mice here.

Email the show at shortwave@npr.org.
NPR logo

Meet The 'Glacier Mice'

  • Download
  • <iframe src="https://www.npr.org/player/embed/980365502/980366289" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
Meet The 'Glacier Mice'

Meet The 'Glacier Mice'

Meet The 'Glacier Mice'

  • Download
  • <iframe src="https://www.npr.org/player/embed/980365502/980366289" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

Glacier mice in Iceland. Ruth Mottram/Ruth Mottram hide caption

toggle caption
Ruth Mottram/Ruth Mottram

Glacier mice in Iceland.

Ruth Mottram/Ruth Mottram

(Encore episode.) In 2006, while hiking around the Root Glacier in Alaska, glaciologist Tim Bartholomaus encountered something strange and unexpected on the ice — dozens of fuzzy, green moss balls. It turns out, other glaciologists had come across glacial moss balls before and lovingly called them "glacier mice."

NPR science correspondent Nell Greenfieldboyce and Short Wave reporter Emily Kwong talk about glacial moss balls and delve into the mystery of how they seem to move as a herd.

Read more of Nell's reporting on glacier mice here.

Email the show at shortwave@npr.org.

This episode was produced by Abby Wendle, edited by Geoff Brumfiel, and fact-checked by Emily Kwong.