The Flannelcasters talk about the snowball Earth hypothesis, where the Earth froze over several times at the end of Precambrian time.
#91 - Harry Hess & Seafloor Spreading
The Flannelcasters talk about Harry Hess and the origin of the theory plate tectonics.
#90 - Alfred Wegener
The Flannelcasters talk about Alfred Wegner, the man who proposed the continental drift hypothesis, which eventually paved the way for the theory of plate tectonics.
#89 - The Appalachian Mountains Pt. 2
This is part two of two in the Appalachian Mountains series. The Flannelcasters cover the Alleghanian Orogeny and the erosion of the Appalachians.
Episode 88 - The Appalachian Mountains Pt. 1
In this first of two part series, the Flannelcasters cover the geologic history of the Appalachian Mountains from the Grenville to Acadian Orogeny.