Short Wave Meet The 'Glacier Mice.' Scientists Can't Figure Out Why They Move.
Jun 3, 2020
Nell Greenfield-Boyce, an NPR science correspondent, joins the discussion to explore the fascinating discovery of 'glacier mice'—vibrant green moss balls found on Alaskan glaciers. The podcast delves into the unusual behavior of these mossy wonders, which move in puzzling patterns that leave scientists scratching their heads. From examining their interactions with harsh glacier environments to contemplating the impacts of climate change on these unique ecosystems, the conversation is a captivating blend of mystery and science.
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Discovery of Glacier Mice
- In 2006, glaciologist Tim Bartholomaus discovered unusual green moss balls on Alaska's Root Glacier.
- These moss balls, nicknamed "glacier mice," prompted curiosity due to their peculiar presence on the ice.
Glacier Mice Characteristics and Distribution
- Glacier mice, though rare, have been observed in various locations like Alaska, Iceland, and Svalbard.
- They are not attached to anything and can grow up to six inches in diameter, prompting questions about their movement.
Glacier Mice Movement and Initial Hypothesis
- Scientists confirmed glacier mice movement using accelerometers placed inside the moss balls.
- They initially hypothesized that the movement was caused by the moss balls tipping off ice pedestals formed by differential melting.