Tracking "The Beat" Of Glaciers In North Cascades And Mount Rainier National Parks

Glaciers are the master craftsmen of mountains. Down through the centuries their massive weight grinds down and rearranges the face of mountains.

National Park Service glaciologist Jon Riedel takes a look at these rivers of ice, and their impact on the landscapes of North Cascades and Mount Rainier national parks, in this captivating video.

How is climate change affecting glaciers in these parks, and what does it mean for life nourished by the glaciers? Mr. Riedel addresses those issues.