Good videos, with context.

Distinguish a recorded event from evidence of a long history

Geology & earth science videos

Earth-science videos compress processes that range from minutes to millennia. These selections offer a regional geology lecture and a filmed glacier event, allowing you to compare different forms and timescales of evidence.

Reconstructing earthquakes and observing moving ice

Zentner’s public lecture is the stronger start for understanding how evidence can support an account of past Pacific Northwest earthquakes. The Chasing Ice clip provides a concentrated record of one glacier-calving event, edited from a much longer observation. Use the lecture for reconstruction and the clip for direct visual observation. The size of a single event does not by itself measure a long-term trend, just as a regional history does not supply an exact date for a future earthquake.

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Questions to take into the video

Dramatic footage is not a regional hazard forecast. Consult current official hazard information for planning; the lecture reflects its recording date and the ice clip records a 2008 event.

Explore a connected subject

Climate science & climate change ↗Scientific method & science communication ↗
Sources and selection notes

By . Updated . We compared source-video titles, available uploader descriptions and the linked archive records. The choice of starting points and viewing questions is our editorial guidance. These notes do not claim full-video viewing or independent expert review.

The complete list below preserves the October 31, 2026 snapshot and its original score order. Its labels and summaries include AI-generated source material; topic membership is broader than our selected starting points. Availability and factual claims can change. Suggest a correction.

All 31 videos in this archive topic

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