Asthenosphere, a geologist’s term for the molten layer beneath the earth’s crust, sparks a journey that stretches all the way from ancient Greece to the author of Uncle Tom’s Cabin. Plus: What the heck is a dogberg? It’s when...
The asthenosphere, as described in Brian Kevin’s Yellowstone and Grand Tetons National Parks guide (Bookshop|Amazon) is a gurgling sea of plasticized rock beneath the earth’s rocky crust. Asthenosphere derives from Greek asthenes...