Earth's History

The geological time scale interpreted from rock strata provides a way to organize major historical events in Earth's history. Anaylsis of rock strata and the fossil record help document the existence, diversity, extinction and changes of many life forms throughout history.
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The Driftless Area Mystery | Into the Outdoors
The Driftless Area Mystery | Into the Outdoors

Video

EXPIRES: 6/2/2023 Glaciers reshaped much of Wisconsin’s landscape. As these glaciers retreated, the glacial drift left behind rocks, sand, and other glacial material. Earth scientists mapped areas...
Lookout Mountain | 27:Fifty (1992)
Lookout Mountain | 27:Fifty (1992)

Video

This episode of 27:Fifty takes place at Lookout Mountain, located in Chattanooga, Tennessee. Tim Carrier takes viewers around significant sights around the mountain, such as “Lover’s Leap,” “Fat Man’s...
Mammoth Cave | 27:Fifty (1992)
Mammoth Cave | 27:Fifty (1992)

Video

Located near Bowling Green, Kentucky, Mammoth Cave is the longest underground cave system in the world; over three hundred miles of explored passageways. In the area known as "Gothic Avenue," visitors...
Peachtree Rock (S.C.) Stop 5 - Peachtree Rock
Peachtree Rock (S.C.) Stop 5 - Peachtree Rock

Video

Peachtree Rock – Rudy and Jim visit the actual rock in which the area gets its name. Contrary to popular belief, it is not actually a rock, but merely a large outcropping of sand held together by iron...
Jocassee Gorges (S.C.) Stop 6 - Lake Jocassee
Jocassee Gorges (S.C.) Stop 6 - Lake Jocassee

Video

Lake Jocassee – Here, standing on a rock outcropping, Rudy and Jim analyze Lake Jocassee’s geographic features, along with the variety of trees found around the lake: White Pine, Virginia Pine, and...
Appalachian Cove (S.C.) Stop 6 - Waterfall
Appalachian Cove (S.C.) Stop 6 - Waterfall

Video

The constant stream of mist coming from the waterfall at this next stop affects the variety of plants found here. The mountain, like the forest, is ancient, and the waterfall continues to wear away...