cascadia

Geologist Nick Zentner of Central Washington University gives an hour-long public lecture on the great earthquakes of the Pacific Northwest, including the Cascadia subduction zone and the evidence for past megaquakes. It is part of his Downtown Geology Lecture Series, recorded in Ellensburg in 2016.

Gary Bernhardt's Cascadia Ruby Conference 2011 talk on using the Unix shell for practical problem solving. He builds pipelines interactively by iterative refinement, using small tools as levers.