One of the Worst Man-Made Disasters in History

NARRATOR: 1957. 70 miles from Venice, amid the cliffs and gorges of Italy’s Vajont River Valley, work begins on the Vajont Hydroelectric Dam. Crucial to the dam’s operation is a vast reservoir that can hold 44 billion gallons of water. Ever since the filling of the reservoir in early 1960, enormous cracks have begun appearing on Mount Toc, above the dam. LUCIA FILIPPIN (IN ITALIAN): People could sense that something big was about to happen because the ground was moving and suddenly, new cracks would appear, very deep and very large. NARRATOR: Then, in late 1960, another warning sign. This […]

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Physical Geology – Arbuckle Mountains – Field Trip, Part 2

>>Dr. Doug Elmore: This our second stop on our field trip to the Arbuckle Mountains, and here we have an outcrop of the Collins Ranch conglomerate you can see it right here. This is the conglomerate that was sitting on top of the angular unconformity at our last stop, the first stop on the field trip. So what I’d like to do at this stop is to talk about how this particular rock formed. And to do that we first need to describe the characteristics of this rock. So I’m going ask the students to help me with that so […]

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Landforms, Hey!: Crash Course Kids #17.1

Look outside your window for a sec, and you’ll probably see some buildings and streets, maybe telephone poles, hopefully some trees in there too. A lot of the world that we live in has been shaped by people, and hey, no complaints, because I’m plenty comfortable right here. But people aren’t the only ones moving things around and shaping our world. Wind, rain, and other elements do it all the time, making shapes out of the Earth we call landforms. So what are some kinds of landforms, and how are they made? First, remember that the Earth is made of […]

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